We will explain and apply in R the Permutation-Based Cluster-Mass method proposed by Maris and Oostenveld, 2007 and developed in R by Frossard and Renaud, 2018, using EEG data. Finally the All-Resolution Inference from Rosenblatt et al. 2018 is applied in order to compute the lower bound for the true discovery proportion inside the clusters computed.

Packages

First of all, you need to install and load the following packages:

#devtools::install_github("angeella/ARIeeg")
#devtools::install_github("bnicenboim/eeguana")
#devtools::install_github("jaromilfrossard/permuco")
library(ARIeeg)
library(dplyr)
library(eeguana)
library(ggplot2)
library(tidyr)
library(purrr)
library(abind)
library(permuco4brain)
library(hommel)
library(plotly)
library(tidyverse)

Data

The Dataset from the package ARIeeg is an ERP experiment composed by:

We have one observation for each subject and each stimulus. You can load it using:

load(system.file("extdata", "data_eeg_emotion.RData", package = "ARIeeg"))

We transform the data as eeg_lst class object from the package eeguana:

data = utilsTOlst(data=dati)
is_eeg_lst(data)
## [1] TRUE

and we drop off the final \(5\) channels:

chan_to_rm <- c("RM"  ,  "EOGvo" ,"EOGvu"
                , "EOGhl", "EOGhr")
data <- 
  data %>%
  select(-one_of(chan_to_rm))

Finally, we segment the data and select two conditions, i.e., disgust face and object:

data_seg <- data %>%
  eeg_segment(.description %in% c(3,5),
              lim = c(min(dati$timings$time), max(dati$timings$time))
  ) %>% eeg_baseline()  %>%
  mutate(
    condition =
      description
  ) %>%
  select(-c(type,description))

Some plot to understand the global mean difference between the two conditions:

A<-data_seg %>%
  select(Fp1,Fp2, F3, F4) %>%
  ggplot(aes(x = .time, y = .value)) +
  geom_line(aes(group = condition))  +
  stat_summary(
    fun = "mean", geom = "line", alpha = 1, size = 1.5,
    aes(color = condition),show.legend = TRUE
  ) +
  facet_wrap(~.key) +
  geom_vline(xintercept = 0, linetype = "dashed") +
  geom_vline(xintercept = .17, linetype = "dotted") +
  theme(legend.position = "bottom")+
  scale_color_manual(labels = c("Disgust", "Object"), values = c("#80bfff", "#ff8080"))
ggplotly(A)%>% layout(margin = list(r = 90))

Analysis

Multiple testing problem?

The aim is to test if the difference of brain signal during the two conditions is different from \(0\) for each time points, i.e., \(500\), and for each channel, i.e., \(27\). Therefore, we have \(500 \cdot 27\) statistical tests to perform at group-level, so considering the random subject effect. The multiple testing problem is then obvious, and correction methods as Bonferroni or similar don’t capture the time-spatial correlation structure of the statistical tests, the cluster mass method, proposed by Maris and Oostenveld, 2007, is then used. It is based on permutation theory, and it gains some power respect to other procedure correcting at level of spatial-temporal cluster instead of at level of single tests. It is similar to the cluster mass in the fMRI framework, but in this case, the voxels, i.e., the single object of the analysis, are expressed in terms of combination time-points/channels. The method is then able to gain some power respect to some traditional conservative FWER correction method exploiting the spatial-temporal structure of the data.

Repeated Measures Anova Model

The cluster mass method is based on the Repeated Measures Anova, i.e.,

\[ y = \mathbb{1}_{N \times 1} \mu + \eta X^{\eta} + \pi X^{\pi} + \eta \pi X^{\eta \pi} + \epsilon \]

where \(1_{N \times 1}\) is a matrix with ones and

  1. \(\mu\) is the intercept;
  2. \(y \in \mathbb{R}^{N \times 1}\) is the response variables, i.e., the signal, in our case \(N = n_{subj} \times n_{stimuli} = 40\);
  3. \(X^{\eta} \in \mathbb{R}^{N \times n_{stimuli}}\) is the design matrix describing the fixed effect regarding the stimuli, and \(\eta \in \mathbb{R}^{n_{stimuli} \times 1}\) the corresponding parameter of interest;
  4. \(X^{\pi} \in \mathbb{R}^{N \times n_{subj}}\) is the design matrix describing the random effect regarding the subjects, and \(\pi \in \mathbb{R}^{n_{subj} \times 1}\) the corresponding parameter.
  5. \(X^{\eta \pi}\) is the design matrix describing the interaction effects between subjects and conditions;
  6. \(\epsilon \in \mathbb{R}^{N \times 1}\) is the error term with \(0\) mean and variance \(\sigma^2 I_N\).

Therefore, \(y \sim (\mathbb{1}\mu + X^{\eta} \eta, \Sigma)\), \(\pi \sim (0, \sigma^2_{\pi} I_{nsubj})\) and \(\eta \pi \sim (0,\text{cov}(\eta \pi))\).

We want to make inference on \(\eta\), such that \(H_0: \eta = 0\) vs \(H_1: \eta \ne 0\). We do that using the F statistic, i.e.,

\[ F = \dfrac{y^\top H_{X^{\eta}} y / (n_{stimuli} - 1)}{ y^\top H_{X^{\eta \pi}}y/(n_{stimuli} -1)(n_{subj} -1)} \] where \(H_{X}\) is the projection matrix, i.e., \(H_{X} = X(X^\top X)^{-1} X^\top\). In order to compute this test, we use an alternative definition of \(F\) based on the residuals:

\[ F = \dfrac{r^\top H_{X^{\eta}} r / (n_{stimuli} - 1)}{ r^\top H_{X^{\eta \pi}}r/(n_{stimuli} -1)(n_{subj} -1)} \]

where \(r = (H_{X^{\eta}} + H_{X^{\eta\pi}})y\). For further details, see Kherad Pajouh and Renaud, 2014.

So, let the group of permutation, including the identity transformation, \(\mathcal{P}\), we use \(r^\star = P r\), where \(P \in \mathcal{P}\) to compute the null distribution of our test, i.e., \(\mathcal{R}\), and then the p-value, i.e.,

\[ \text{p-value} = \dfrac{1}{B} \sum_{r^\star_b \in \mathcal{R}} \mathbb{I}(|r^\star_b| \ge |r|) \]

if the two-tailed is considered.

We have this model for each time point \(t \in \{1, \dots, 500\}\) and each channel, so finally we will have \(n_{\text{time-points}} \times n_{\text{channels}}\) statistical tests/p-values (raw).

Spatio-temporal Cluster mass

Then, we need to construct the spatial-temporal clusters in order to correct the raw p-values for the FWER. In this case, we will use the theory of graph, where the vertices represent the channels, and the edges represent the adjacency relationship. The adjacency must be defined using prior information, therefore the three-dimensional Euclidean distance between channels is used. Two channels are defined adjacent if their Euclidean distance is less than a threshold \(\delta\), where \(\delta\) is the smallest euclidean distance that produces a connected graph. This is due to the fact that a connected graph implies no disconnected sub-graph. Having sub-graphs implies that some tests cannot, by design, be in the same cluster, which is not a useful assumption for this analysis. (Frossard and Renaud, 2018; Frossard, 2019).

Then, having the spatial adjacency definition, we need to define the temporal one. We reproduce this graph \(n_{\text{time-points}}\) times, the edges between all pairs of two vertices (tests) are associated with the same electrode when they are temporally adjacent. The final graph has a total of vertices equals to the number of tests (\(n_{\text{channels}} \times n_{\text{time-points}}\)). The following figure represents the case of \(64\) channels and \(3\) temporal measures:

Example of graph of adjacency from Frossard, 2019

Example of graph of adjacency from Frossard, 2019

We then delete all the vertices in which statistics are below a threshold, e.g., the \(95\) percentile of the null distribution of the \(F\) statistics. So, we have a new graph composed of multiple connected components. Then, each connected component is interpreted as a spatiotemporal cluster. Finally, for each connected component, we compute the cluster-mass statistic using the sum (or sum of squares) of statistics of that particular connected component.

The cluster-mass null distribution is computed by permutations while maintaining spatio-temporal correlations among tests. Permutations must be performed without changing the position of electrodes nor mixing time-points. Concretely, after transforming the responses using the permutation method in Kherad Pajouh and Renaud, 2014, they are sorted in a three-dimensional array. It has the design (subjects \(\times\) stimuli) in the first dimension, time in the second one and electrodes in the third one. Then, only the first dimension is permuted to create a re-sampled response (or 3D array). Doing so, it does not reorder time-points, neither electrodes, therefore, the spatiotemporal correlations are maintained within each permuted sample.

Permuco4brain

In R, all of this is possible thanks to the permuco and permuco4brain packages developed by Frossard and Renaud, 2018.

  1. Construct the \(y\). We need to construct the three-dimensional signal array, having dimensions \(40 \times 500 \times 27\):
signal <- 
    data_seg%>%
    signal_tbl()%>%
    group_by(.id)%>%
    nest()%>%
    mutate(data = map(data,~as.matrix(.x[-1])))%>%
    pull(data)%>%
    invoke(abind,.,along = 3)%>%
    aperm(c(3,1,2))

dim(signal)
## [1]  40 500  27
  1. Construct the \(X_{\eta \pi}\):
design <- 
  segments_tbl(data_seg)%>%
  select(.subj, condition)
dim(design)
## [1] 40  2
  1. Construct the graph, using \(\delta = 53mm\):
graph <- position_to_graph(channels_tbl(data_seg), name = .channel, delta = 53,
                             x = .x, y = .y, z = .z)
plot(graph)

  1. Define the repeated measures ANOVA formula:
f <- signal ~ condition + Error(.subj/(condition))

Finally, run the main function:

model <- permuco4brain::brainperm(formula = f,
                                  data = design,
                                  graph = graph,
                                  np = 5000,
                                  multcomp = "clustermass",
                                  return_distribution = TRUE)
## Computing Effect:
## 1 (condition) of 1. Start at 2020-05-17 11:31:43.

where np indicates the number of permutation.

Then, we can analyze the output:

print(model)
## Effect: condition.
## Alternative Hypothesis: two.sided.
## Statistic: fisher(1, 19).
## Resample Method: Rd_kheradPajouh_renaud.
## Number of Dependant Variables: 13500.
## Type of Resample: permutation.
## Number of Resamples: 5000.
## Multiple Comparisons Procedure: clustermass.
## Threshold: 4.38075.
## Mass Function: the sum.
## Table of clusters.
## 
##    Cluster id First sample Last sample N. chan. Main chan. Main chan. length
## 1           1            1           4        3         Fz                 4
## 2           2            2           6        2         O2                 5
## 3           3            3           6        1         F7                 4
## 4           4           10          10        1         F8                 1
## 5           5           18          19        1         Pz                 2
## 6           6           25          27        1         T7                 3
## 7           7           29          30        1         F8                 2
## 8           8           38          41        1         F3                 4
## 9           9           39          41        2         Pz                 3
## 10         10           40          40        1        Fp1                 1
## 11         11           40          44        1         T7                 5
## 12         12           45          49        1         F4                 5
## 13         13           46          48        1        Fp1                 3
## 14         14           47          49        1         P4                 3
## 15         15           48          49        1         C4                 2
## 16         16           51          52        1         T7                 2
## 17         17           61          68        3         P3                 8
## 18         18           70          75        3        PO8                 6
## 19         19           71          73        1        Fp2                 3
## 20         20           83          86        1         C4                 4
## 21         21           83          88        2         T7                 6
## 22         22           96         105        4     F3 (2)                 8
## 23         23          101         108        3     O2 (2)                 6
## 24         24          110         117        6     C3 (2)                 8
## 25         25          115         117        1         P8                 3
## 26         26          125         126        1         F7                 2
## 27         27          128         137        4         P8                 9
## 28         28          133         135        2         C3                 3
## 29         29          136         139        2        Fp1                 4
## 30         30          137         139        2        PO7                 3
## 31         31          142         144        1        Fp1                 3
## 32         32          146         500       27         P7               343
## 33         33          148         157        8     C4 (3)                 9
## 34         34          148         152        1         P7                 5
## 35         35          153         154        1        Fp1                 2
## 36         36          314         320        1        Fp1                 7
## 37         37          336         341        1        Fp1                 6
## 38         38          351         352        1        Fp1                 2
## 39         39          363         367        1        Fp1                 5
## 40         40          376         383        1        Fp1                 8
## 41         41          408         421        1        Fp1                14
##    N. test  Clustermass P(>mass)
## 1        8 4.824842e+01   0.9956
## 2        8 5.655352e+01   0.9930
## 3        4 2.161425e+01   0.9998
## 4        1 4.595571e+00   1.0000
## 5        2 9.160799e+00   1.0000
## 6        3 1.727826e+01   0.9998
## 7        2 9.953708e+00   1.0000
## 8        4 2.247954e+01   0.9996
## 9        4 1.841798e+01   0.9998
## 10       1 5.834359e+00   1.0000
## 11       5 3.514078e+01   0.9982
## 12       5 3.062193e+01   0.9986
## 13       3 1.562175e+01   0.9998
## 14       3 1.855438e+01   0.9998
## 15       2 1.046127e+01   1.0000
## 16       2 1.091898e+01   1.0000
## 17      13 9.673299e+01   0.9784
## 18      16 9.924648e+01   0.9766
## 19       3 1.701493e+01   0.9998
## 20       4 2.614448e+01   0.9994
## 21      10 7.604927e+01   0.9864
## 22      26 1.750308e+02   0.9294
## 23      17 1.039216e+02   0.9742
## 24      35 2.762222e+02   0.8634
## 25       3 1.367199e+01   1.0000
## 26       2 9.355923e+00   1.0000
## 27      27 1.703500e+02   0.9326
## 28       5 2.598810e+01   0.9994
## 29       6 3.007729e+01   0.9988
## 30       4 1.807287e+01   0.9998
## 31       3 1.823876e+01   0.9998
## 32    4788 1.041780e+05   0.0002
## 33      54 4.224551e+02   0.7706
## 34       5 3.646500e+01   0.9980
## 35       2 9.661613e+00   1.0000
## 36       7 5.632912e+01   0.9932
## 37       6 3.530033e+01   0.9982
## 38       2 9.153198e+00   1.0000
## 39       5 2.908355e+01   0.9992
## 40       8 6.388484e+01   0.9908
## 41      14 8.033085e+01   0.9854

We have only one significant cluster (32), with p-value equals to \(0.0002\). It is composed by \(27\) channels (the total set), with main channels P7. You can see in details the components of this cluster in

names(model$multiple_comparison$condition$clustermass$cluster$membership[which(as.vector(model$multiple_comparison$condition$clustermass$cluster$membership)==32)])
##    [1] "O2_146"  "O2_147"  "O2_148"  "O2_149"  "O2_150"  "O2_151"  "Pz_151" 
##    [8] "O2_152"  "Pz_152"  "O1_153"  "O2_153"  "Pz_153"  "O1_154"  "O2_154" 
##   [15] "Pz_154"  "O1_155"  "O2_155"  "Pz_155"  "O1_156"  "O2_156"  "Pz_156" 
##   [22] "O1_157"  "O2_157"  "Pz_157"  "P7_158"  "O1_158"  "Pz_158"  "P7_159" 
##   [29] "O1_159"  "Pz_159"  "F4_160"  "P7_160"  "PO7_160" "Pz_160"  "Fp1_161"
##   [36] "Fp2_161" "F4_161"  "C4_161"  "T7_161"  "CP2_161" "P7_161"  "PO7_161"
##   [43] "Pz_161"  "Fp1_162" "Fp2_162" "F4_162"  "F7_162"  "F8_162"  "FC2_162"
##   [50] "C4_162"  "T7_162"  "CP2_162" "P7_162"  "P8_162"  "PO7_162" "Cz_162" 
##   [57] "CPz_162" "Pz_162"  "Fp1_163" "Fp2_163" "F4_163"  "F8_163"  "FC2_163"
##   [64] "C4_163"  "T7_163"  "CP2_163" "P7_163"  "P8_163"  "PO7_163" "Fz_163" 
##   [71] "FCz_163" "Cz_163"  "CPz_163" "Pz_163"  "Fp1_164" "Fp2_164" "F4_164" 
##   [78] "F8_164"  "FC1_164" "FC2_164" "C4_164"  "T7_164"  "CP2_164" "P7_164" 
##   [85] "P8_164"  "PO7_164" "PO8_164" "Fz_164"  "FCz_164" "Cz_164"  "CPz_164"
##   [92] "Pz_164"  "Fp1_165" "Fp2_165" "F3_165"  "F4_165"  "F8_165"  "FC1_165"
##   [99] "FC2_165" "C4_165"  "T7_165"  "CP1_165" "CP2_165" "P7_165"  "P8_165" 
##  [106] "PO7_165" "PO8_165" "O1_165"  "O2_165"  "Fz_165"  "FCz_165" "Cz_165" 
##  [113] "CPz_165" "Pz_165"  "Fp1_166" "Fp2_166" "F3_166"  "F4_166"  "F8_166" 
##  [120] "FC1_166" "FC2_166" "C4_166"  "T7_166"  "CP1_166" "CP2_166" "P7_166" 
##  [127] "P8_166"  "PO7_166" "PO8_166" "O1_166"  "O2_166"  "Fz_166"  "FCz_166"
##  [134] "Cz_166"  "CPz_166" "Pz_166"  "Fp1_167" "Fp2_167" "F3_167"  "F4_167" 
##  [141] "F8_167"  "FC1_167" "FC2_167" "C3_167"  "C4_167"  "T7_167"  "CP1_167"
##  [148] "CP2_167" "P7_167"  "P8_167"  "PO7_167" "PO8_167" "O1_167"  "O2_167" 
##  [155] "Fz_167"  "FCz_167" "Cz_167"  "CPz_167" "Pz_167"  "Fp1_168" "Fp2_168"
##  [162] "F3_168"  "F4_168"  "F8_168"  "FC1_168" "FC2_168" "C3_168"  "C4_168" 
##  [169] "T7_168"  "CP1_168" "CP2_168" "P7_168"  "P8_168"  "PO7_168" "PO8_168"
##  [176] "O1_168"  "O2_168"  "Fz_168"  "FCz_168" "Cz_168"  "CPz_168" "Pz_168" 
##  [183] "Fp1_169" "Fp2_169" "F3_169"  "F4_169"  "F8_169"  "FC1_169" "FC2_169"
##  [190] "C3_169"  "C4_169"  "T7_169"  "CP1_169" "CP2_169" "P7_169"  "P8_169" 
##  [197] "PO7_169" "PO8_169" "O1_169"  "O2_169"  "Fz_169"  "FCz_169" "Cz_169" 
##  [204] "CPz_169" "Pz_169"  "Fp1_170" "Fp2_170" "F3_170"  "F4_170"  "F8_170" 
##  [211] "FC1_170" "FC2_170" "C3_170"  "C4_170"  "T7_170"  "CP1_170" "CP2_170"
##  [218] "P7_170"  "P8_170"  "PO7_170" "PO8_170" "O1_170"  "O2_170"  "Fz_170" 
##  [225] "FCz_170" "Cz_170"  "CPz_170" "Pz_170"  "Fp1_171" "Fp2_171" "F3_171" 
##  [232] "F4_171"  "F8_171"  "FC1_171" "FC2_171" "C3_171"  "C4_171"  "T7_171" 
##  [239] "CP1_171" "CP2_171" "P7_171"  "P8_171"  "PO7_171" "PO8_171" "O1_171" 
##  [246] "O2_171"  "Fz_171"  "FCz_171" "Cz_171"  "CPz_171" "Pz_171"  "Fp1_172"
##  [253] "Fp2_172" "F3_172"  "F4_172"  "F8_172"  "FC1_172" "FC2_172" "C3_172" 
##  [260] "C4_172"  "T7_172"  "T8_172"  "CP1_172" "CP2_172" "P7_172"  "P8_172" 
##  [267] "PO7_172" "PO8_172" "O1_172"  "O2_172"  "Fz_172"  "FCz_172" "Cz_172" 
##  [274] "CPz_172" "Pz_172"  "Fp1_173" "Fp2_173" "F3_173"  "F4_173"  "F8_173" 
##  [281] "FC1_173" "FC2_173" "C3_173"  "C4_173"  "T7_173"  "T8_173"  "CP1_173"
##  [288] "CP2_173" "P7_173"  "P8_173"  "PO7_173" "PO8_173" "O1_173"  "O2_173" 
##  [295] "Fz_173"  "FCz_173" "Cz_173"  "CPz_173" "Pz_173"  "Fp1_174" "Fp2_174"
##  [302] "F3_174"  "F4_174"  "F7_174"  "F8_174"  "FC1_174" "FC2_174" "C3_174" 
##  [309] "C4_174"  "T7_174"  "T8_174"  "CP1_174" "CP2_174" "P7_174"  "P8_174" 
##  [316] "PO7_174" "PO8_174" "O1_174"  "O2_174"  "Fz_174"  "FCz_174" "Cz_174" 
##  [323] "CPz_174" "Pz_174"  "Fp1_175" "Fp2_175" "F3_175"  "F4_175"  "F7_175" 
##  [330] "F8_175"  "FC1_175" "FC2_175" "C3_175"  "C4_175"  "T7_175"  "T8_175" 
##  [337] "CP1_175" "CP2_175" "P7_175"  "P8_175"  "PO7_175" "PO8_175" "O1_175" 
##  [344] "O2_175"  "Fz_175"  "FCz_175" "Cz_175"  "CPz_175" "Pz_175"  "Fp1_176"
##  [351] "Fp2_176" "F3_176"  "F4_176"  "F7_176"  "F8_176"  "FC1_176" "FC2_176"
##  [358] "C3_176"  "C4_176"  "T7_176"  "T8_176"  "CP1_176" "CP2_176" "P7_176" 
##  [365] "P8_176"  "PO7_176" "PO8_176" "O1_176"  "O2_176"  "Fz_176"  "FCz_176"
##  [372] "Cz_176"  "CPz_176" "Pz_176"  "Fp1_177" "Fp2_177" "F3_177"  "F4_177" 
##  [379] "F7_177"  "F8_177"  "FC1_177" "FC2_177" "C3_177"  "C4_177"  "T7_177" 
##  [386] "T8_177"  "CP1_177" "CP2_177" "P7_177"  "P8_177"  "PO7_177" "PO8_177"
##  [393] "O1_177"  "O2_177"  "Fz_177"  "FCz_177" "Cz_177"  "CPz_177" "Pz_177" 
##  [400] "Fp1_178" "Fp2_178" "F3_178"  "F4_178"  "F7_178"  "F8_178"  "FC1_178"
##  [407] "FC2_178" "C3_178"  "C4_178"  "T7_178"  "T8_178"  "CP1_178" "CP2_178"
##  [414] "P7_178"  "P8_178"  "PO7_178" "PO8_178" "O1_178"  "O2_178"  "Fz_178" 
##  [421] "FCz_178" "Cz_178"  "CPz_178" "Pz_178"  "Fp1_179" "Fp2_179" "F3_179" 
##  [428] "F4_179"  "F7_179"  "F8_179"  "FC1_179" "FC2_179" "C3_179"  "C4_179" 
##  [435] "T7_179"  "T8_179"  "CP1_179" "CP2_179" "P7_179"  "P8_179"  "PO7_179"
##  [442] "PO8_179" "O1_179"  "O2_179"  "Fz_179"  "FCz_179" "Cz_179"  "CPz_179"
##  [449] "Pz_179"  "Fp1_180" "Fp2_180" "F3_180"  "F4_180"  "F7_180"  "F8_180" 
##  [456] "FC1_180" "FC2_180" "C3_180"  "C4_180"  "T7_180"  "T8_180"  "CP1_180"
##  [463] "CP2_180" "P7_180"  "P8_180"  "PO7_180" "PO8_180" "O1_180"  "O2_180" 
##  [470] "Fz_180"  "FCz_180" "Cz_180"  "CPz_180" "Pz_180"  "Fp1_181" "Fp2_181"
##  [477] "F3_181"  "F4_181"  "F7_181"  "F8_181"  "FC1_181" "FC2_181" "C3_181" 
##  [484] "C4_181"  "T7_181"  "T8_181"  "CP1_181" "CP2_181" "P7_181"  "P8_181" 
##  [491] "PO7_181" "PO8_181" "O1_181"  "O2_181"  "Fz_181"  "FCz_181" "Cz_181" 
##  [498] "CPz_181" "Pz_181"  "Fp1_182" "Fp2_182" "F3_182"  "F4_182"  "F7_182" 
##  [505] "F8_182"  "FC1_182" "FC2_182" "C3_182"  "C4_182"  "T7_182"  "T8_182" 
##  [512] "CP1_182" "CP2_182" "P7_182"  "P8_182"  "PO7_182" "PO8_182" "O1_182" 
##  [519] "O2_182"  "Fz_182"  "FCz_182" "Cz_182"  "CPz_182" "Pz_182"  "Fp1_183"
##  [526] "Fp2_183" "F3_183"  "F4_183"  "F7_183"  "F8_183"  "FC1_183" "FC2_183"
##  [533] "C3_183"  "C4_183"  "T7_183"  "T8_183"  "CP1_183" "CP2_183" "P7_183" 
##  [540] "P8_183"  "P3_183"  "PO7_183" "PO8_183" "O1_183"  "O2_183"  "Fz_183" 
##  [547] "FCz_183" "Cz_183"  "CPz_183" "Pz_183"  "Fp1_184" "Fp2_184" "F3_184" 
##  [554] "F4_184"  "F7_184"  "F8_184"  "FC1_184" "FC2_184" "C3_184"  "C4_184" 
##  [561] "T7_184"  "T8_184"  "CP1_184" "CP2_184" "P7_184"  "P8_184"  "P3_184" 
##  [568] "PO7_184" "PO8_184" "O1_184"  "O2_184"  "Fz_184"  "FCz_184" "Cz_184" 
##  [575] "CPz_184" "Pz_184"  "Fp1_185" "Fp2_185" "F3_185"  "F4_185"  "F7_185" 
##  [582] "F8_185"  "FC1_185" "FC2_185" "C3_185"  "C4_185"  "T7_185"  "T8_185" 
##  [589] "CP1_185" "CP2_185" "P7_185"  "P8_185"  "P3_185"  "PO7_185" "PO8_185"
##  [596] "O1_185"  "O2_185"  "Fz_185"  "FCz_185" "Cz_185"  "CPz_185" "Pz_185" 
##  [603] "Fp1_186" "Fp2_186" "F3_186"  "F4_186"  "F7_186"  "F8_186"  "FC1_186"
##  [610] "FC2_186" "C3_186"  "C4_186"  "T7_186"  "T8_186"  "CP1_186" "CP2_186"
##  [617] "P7_186"  "P8_186"  "P3_186"  "PO7_186" "PO8_186" "O1_186"  "O2_186" 
##  [624] "Fz_186"  "FCz_186" "Cz_186"  "CPz_186" "Pz_186"  "Fp1_187" "Fp2_187"
##  [631] "F3_187"  "F4_187"  "F7_187"  "F8_187"  "FC1_187" "FC2_187" "C3_187" 
##  [638] "C4_187"  "T7_187"  "T8_187"  "CP1_187" "CP2_187" "P7_187"  "P8_187" 
##  [645] "P3_187"  "PO7_187" "PO8_187" "O1_187"  "O2_187"  "Fz_187"  "FCz_187"
##  [652] "Cz_187"  "CPz_187" "Pz_187"  "Fp1_188" "Fp2_188" "F3_188"  "F4_188" 
##  [659] "F7_188"  "F8_188"  "FC1_188" "FC2_188" "C3_188"  "C4_188"  "T7_188" 
##  [666] "T8_188"  "CP1_188" "CP2_188" "P7_188"  "P8_188"  "P3_188"  "PO7_188"
##  [673] "PO8_188" "O1_188"  "O2_188"  "Fz_188"  "FCz_188" "Cz_188"  "CPz_188"
##  [680] "Pz_188"  "Fp1_189" "Fp2_189" "F3_189"  "F4_189"  "F7_189"  "F8_189" 
##  [687] "FC1_189" "FC2_189" "C3_189"  "C4_189"  "T7_189"  "CP1_189" "CP2_189"
##  [694] "P7_189"  "P8_189"  "P3_189"  "PO7_189" "PO8_189" "O1_189"  "O2_189" 
##  [701] "Fz_189"  "FCz_189" "Cz_189"  "CPz_189" "Pz_189"  "Fp1_190" "Fp2_190"
##  [708] "F3_190"  "F4_190"  "F7_190"  "F8_190"  "FC1_190" "FC2_190" "C3_190" 
##  [715] "C4_190"  "CP1_190" "CP2_190" "P7_190"  "P8_190"  "P3_190"  "PO7_190"
##  [722] "PO8_190" "O1_190"  "O2_190"  "Fz_190"  "FCz_190" "Cz_190"  "CPz_190"
##  [729] "Pz_190"  "Fp1_191" "Fp2_191" "F3_191"  "F4_191"  "F7_191"  "F8_191" 
##  [736] "FC1_191" "FC2_191" "C3_191"  "C4_191"  "CP1_191" "CP2_191" "P7_191" 
##  [743] "P8_191"  "P3_191"  "PO7_191" "PO8_191" "O1_191"  "O2_191"  "Fz_191" 
##  [750] "FCz_191" "Cz_191"  "CPz_191" "Pz_191"  "Fp1_192" "Fp2_192" "F3_192" 
##  [757] "F4_192"  "F7_192"  "F8_192"  "FC1_192" "FC2_192" "C3_192"  "C4_192" 
##  [764] "CP1_192" "CP2_192" "P7_192"  "P8_192"  "P3_192"  "PO7_192" "PO8_192"
##  [771] "O1_192"  "O2_192"  "Fz_192"  "FCz_192" "Cz_192"  "CPz_192" "Pz_192" 
##  [778] "Fp1_193" "Fp2_193" "F3_193"  "F4_193"  "F7_193"  "F8_193"  "FC1_193"
##  [785] "FC2_193" "C3_193"  "C4_193"  "CP1_193" "CP2_193" "P7_193"  "P8_193" 
##  [792] "P3_193"  "PO7_193" "PO8_193" "O1_193"  "O2_193"  "Fz_193"  "FCz_193"
##  [799] "Cz_193"  "CPz_193" "Fp1_194" "Fp2_194" "F3_194"  "F4_194"  "F7_194" 
##  [806] "F8_194"  "FC1_194" "FC2_194" "C3_194"  "C4_194"  "CP1_194" "CP2_194"
##  [813] "P7_194"  "P8_194"  "P3_194"  "PO7_194" "PO8_194" "O1_194"  "O2_194" 
##  [820] "Fz_194"  "FCz_194" "Cz_194"  "CPz_194" "Fp1_195" "Fp2_195" "F3_195" 
##  [827] "F4_195"  "F7_195"  "F8_195"  "FC1_195" "FC2_195" "C4_195"  "CP2_195"
##  [834] "P7_195"  "P8_195"  "P3_195"  "PO7_195" "PO8_195" "O1_195"  "O2_195" 
##  [841] "Fz_195"  "FCz_195" "Cz_195"  "CPz_195" "Fp1_196" "Fp2_196" "F3_196" 
##  [848] "F4_196"  "F7_196"  "F8_196"  "FC1_196" "FC2_196" "C4_196"  "P7_196" 
##  [855] "P8_196"  "P3_196"  "PO7_196" "PO8_196" "O1_196"  "O2_196"  "Fz_196" 
##  [862] "FCz_196" "Cz_196"  "CPz_196" "Fp1_197" "Fp2_197" "F3_197"  "F4_197" 
##  [869] "F7_197"  "F8_197"  "FC1_197" "FC2_197" "C4_197"  "P7_197"  "P8_197" 
##  [876] "P3_197"  "PO7_197" "PO8_197" "O1_197"  "O2_197"  "Fz_197"  "FCz_197"
##  [883] "Cz_197"  "CPz_197" "Fp1_198" "Fp2_198" "F3_198"  "F4_198"  "F7_198" 
##  [890] "F8_198"  "FC1_198" "FC2_198" "C4_198"  "P7_198"  "P8_198"  "P3_198" 
##  [897] "PO7_198" "PO8_198" "O1_198"  "O2_198"  "Fz_198"  "FCz_198" "Cz_198" 
##  [904] "CPz_198" "Fp1_199" "Fp2_199" "F3_199"  "F4_199"  "F7_199"  "F8_199" 
##  [911] "FC1_199" "FC2_199" "C4_199"  "P7_199"  "P8_199"  "P3_199"  "PO7_199"
##  [918] "PO8_199" "O1_199"  "O2_199"  "Fz_199"  "FCz_199" "Cz_199"  "Fp1_200"
##  [925] "Fp2_200" "F3_200"  "F4_200"  "F7_200"  "F8_200"  "FC1_200" "FC2_200"
##  [932] "P7_200"  "P8_200"  "P3_200"  "PO7_200" "PO8_200" "O1_200"  "O2_200" 
##  [939] "Fz_200"  "FCz_200" "Cz_200"  "Fp1_201" "Fp2_201" "F3_201"  "F4_201" 
##  [946] "F7_201"  "F8_201"  "FC1_201" "FC2_201" "P7_201"  "P8_201"  "P3_201" 
##  [953] "PO7_201" "O1_201"  "Fz_201"  "FCz_201" "Cz_201"  "Fp1_202" "Fp2_202"
##  [960] "F3_202"  "F4_202"  "F7_202"  "F8_202"  "FC1_202" "FC2_202" "P7_202" 
##  [967] "P8_202"  "P3_202"  "PO7_202" "O1_202"  "Fz_202"  "FCz_202" "Cz_202" 
##  [974] "Fp1_203" "Fp2_203" "F3_203"  "F4_203"  "F7_203"  "F8_203"  "FC1_203"
##  [981] "FC2_203" "P7_203"  "P8_203"  "P3_203"  "PO7_203" "O1_203"  "Fz_203" 
##  [988] "FCz_203" "Cz_203"  "Fp1_204" "Fp2_204" "F3_204"  "F4_204"  "F7_204" 
##  [995] "F8_204"  "FC1_204" "FC2_204" "P7_204"  "P8_204"  "P3_204"  "PO7_204"
## [1002] "PO8_204" "O1_204"  "Fz_204"  "FCz_204" "Cz_204"  "Fp1_205" "Fp2_205"
## [1009] "F3_205"  "F4_205"  "F7_205"  "F8_205"  "FC1_205" "FC2_205" "P7_205" 
## [1016] "P8_205"  "P3_205"  "PO7_205" "PO8_205" "O1_205"  "O2_205"  "Fz_205" 
## [1023] "FCz_205" "Cz_205"  "Fp1_206" "Fp2_206" "F3_206"  "F4_206"  "F7_206" 
## [1030] "F8_206"  "FC1_206" "FC2_206" "P7_206"  "P8_206"  "P3_206"  "PO7_206"
## [1037] "PO8_206" "O1_206"  "O2_206"  "Fz_206"  "FCz_206" "Cz_206"  "Fp1_207"
## [1044] "Fp2_207" "F3_207"  "F4_207"  "F7_207"  "F8_207"  "FC1_207" "FC2_207"
## [1051] "P7_207"  "P8_207"  "P3_207"  "PO7_207" "PO8_207" "O1_207"  "O2_207" 
## [1058] "Fz_207"  "FCz_207" "Cz_207"  "Fp1_208" "Fp2_208" "F3_208"  "F4_208" 
## [1065] "F7_208"  "F8_208"  "FC1_208" "FC2_208" "C4_208"  "P7_208"  "P8_208" 
## [1072] "P3_208"  "PO7_208" "PO8_208" "O1_208"  "O2_208"  "Fz_208"  "FCz_208"
## [1079] "Cz_208"  "CPz_208" "Fp1_209" "Fp2_209" "F3_209"  "F4_209"  "F7_209" 
## [1086] "F8_209"  "FC1_209" "FC2_209" "C4_209"  "P7_209"  "P8_209"  "P3_209" 
## [1093] "PO7_209" "PO8_209" "O1_209"  "O2_209"  "Fz_209"  "FCz_209" "Cz_209" 
## [1100] "CPz_209" "Fp1_210" "Fp2_210" "F3_210"  "F4_210"  "F7_210"  "F8_210" 
## [1107] "FC1_210" "FC2_210" "C4_210"  "CP2_210" "P7_210"  "P8_210"  "P3_210" 
## [1114] "PO7_210" "PO8_210" "O1_210"  "O2_210"  "Fz_210"  "FCz_210" "Cz_210" 
## [1121] "CPz_210" "Fp1_211" "Fp2_211" "F3_211"  "F4_211"  "F7_211"  "F8_211" 
## [1128] "FC1_211" "FC2_211" "C4_211"  "CP2_211" "P7_211"  "P8_211"  "P3_211" 
## [1135] "PO7_211" "PO8_211" "O1_211"  "O2_211"  "Fz_211"  "FCz_211" "Cz_211" 
## [1142] "CPz_211" "Fp1_212" "Fp2_212" "F3_212"  "F4_212"  "F7_212"  "F8_212" 
## [1149] "FC1_212" "FC2_212" "C4_212"  "CP2_212" "P7_212"  "P8_212"  "P3_212" 
## [1156] "PO7_212" "PO8_212" "O1_212"  "O2_212"  "Fz_212"  "FCz_212" "Cz_212" 
## [1163] "CPz_212" "Fp1_213" "Fp2_213" "F3_213"  "F4_213"  "F7_213"  "F8_213" 
## [1170] "FC1_213" "FC2_213" "C4_213"  "T7_213"  "CP2_213" "P7_213"  "P8_213" 
## [1177] "P3_213"  "PO7_213" "PO8_213" "O1_213"  "O2_213"  "Fz_213"  "FCz_213"
## [1184] "Cz_213"  "CPz_213" "Fp1_214" "Fp2_214" "F3_214"  "F4_214"  "F7_214" 
## [1191] "F8_214"  "FC1_214" "FC2_214" "C4_214"  "T7_214"  "CP2_214" "P7_214" 
## [1198] "P8_214"  "P3_214"  "PO7_214" "PO8_214" "O1_214"  "O2_214"  "Fz_214" 
## [1205] "FCz_214" "Cz_214"  "CPz_214" "Fp1_215" "Fp2_215" "F3_215"  "F4_215" 
## [1212] "F7_215"  "F8_215"  "FC1_215" "FC2_215" "C4_215"  "T7_215"  "CP2_215"
## [1219] "P7_215"  "P8_215"  "P3_215"  "PO7_215" "PO8_215" "O1_215"  "O2_215" 
## [1226] "Fz_215"  "FCz_215" "Cz_215"  "CPz_215" "Fp1_216" "Fp2_216" "F3_216" 
## [1233] "F4_216"  "F7_216"  "F8_216"  "FC1_216" "FC2_216" "C4_216"  "T7_216" 
## [1240] "CP2_216" "P7_216"  "P8_216"  "P3_216"  "PO7_216" "PO8_216" "O1_216" 
## [1247] "O2_216"  "Fz_216"  "FCz_216" "Cz_216"  "CPz_216" "Fp1_217" "Fp2_217"
## [1254] "F3_217"  "F4_217"  "F7_217"  "F8_217"  "FC1_217" "FC2_217" "C4_217" 
## [1261] "T7_217"  "CP2_217" "P7_217"  "P8_217"  "P3_217"  "PO7_217" "PO8_217"
## [1268] "O1_217"  "O2_217"  "Fz_217"  "FCz_217" "Cz_217"  "CPz_217" "Fp1_218"
## [1275] "Fp2_218" "F3_218"  "F4_218"  "F7_218"  "F8_218"  "FC1_218" "FC2_218"
## [1282] "C4_218"  "CP2_218" "P7_218"  "P8_218"  "P3_218"  "PO7_218" "PO8_218"
## [1289] "O1_218"  "O2_218"  "Fz_218"  "FCz_218" "Cz_218"  "CPz_218" "Fp1_219"
## [1296] "Fp2_219" "F3_219"  "F4_219"  "F7_219"  "F8_219"  "FC1_219" "FC2_219"
## [1303] "C4_219"  "CP2_219" "P7_219"  "P8_219"  "P3_219"  "PO7_219" "PO8_219"
## [1310] "O1_219"  "O2_219"  "Fz_219"  "FCz_219" "Cz_219"  "CPz_219" "Fp1_220"
## [1317] "Fp2_220" "F3_220"  "F4_220"  "F7_220"  "F8_220"  "FC1_220" "FC2_220"
## [1324] "C4_220"  "CP1_220" "CP2_220" "P7_220"  "P8_220"  "P3_220"  "PO7_220"
## [1331] "PO8_220" "O1_220"  "O2_220"  "Fz_220"  "FCz_220" "Cz_220"  "CPz_220"
## [1338] "Fp1_221" "Fp2_221" "F3_221"  "F4_221"  "F7_221"  "F8_221"  "FC1_221"
## [1345] "FC2_221" "C3_221"  "C4_221"  "CP1_221" "CP2_221" "P7_221"  "P8_221" 
## [1352] "P3_221"  "PO7_221" "PO8_221" "O1_221"  "O2_221"  "Fz_221"  "FCz_221"
## [1359] "Cz_221"  "CPz_221" "Fp1_222" "Fp2_222" "F3_222"  "F4_222"  "F7_222" 
## [1366] "F8_222"  "FC1_222" "FC2_222" "C3_222"  "C4_222"  "CP1_222" "CP2_222"
## [1373] "P7_222"  "P8_222"  "P3_222"  "PO7_222" "PO8_222" "O1_222"  "O2_222" 
## [1380] "Fz_222"  "FCz_222" "Cz_222"  "CPz_222" "Fp1_223" "Fp2_223" "F3_223" 
## [1387] "F4_223"  "F7_223"  "F8_223"  "FC1_223" "FC2_223" "C3_223"  "C4_223" 
## [1394] "CP1_223" "CP2_223" "P7_223"  "P8_223"  "P3_223"  "PO7_223" "PO8_223"
## [1401] "O1_223"  "O2_223"  "Fz_223"  "FCz_223" "Cz_223"  "CPz_223" "Fp1_224"
## [1408] "Fp2_224" "F3_224"  "F4_224"  "F7_224"  "F8_224"  "FC1_224" "FC2_224"
## [1415] "C3_224"  "C4_224"  "CP1_224" "CP2_224" "P7_224"  "P8_224"  "P3_224" 
## [1422] "PO7_224" "PO8_224" "O1_224"  "O2_224"  "Fz_224"  "FCz_224" "Cz_224" 
## [1429] "CPz_224" "Pz_224"  "Fp1_225" "Fp2_225" "F3_225"  "F4_225"  "F7_225" 
## [1436] "F8_225"  "FC1_225" "FC2_225" "C3_225"  "C4_225"  "CP1_225" "CP2_225"
## [1443] "P7_225"  "P8_225"  "P3_225"  "PO7_225" "PO8_225" "O1_225"  "O2_225" 
## [1450] "Fz_225"  "FCz_225" "Cz_225"  "CPz_225" "Pz_225"  "Fp1_226" "Fp2_226"
## [1457] "F3_226"  "F4_226"  "F7_226"  "F8_226"  "FC1_226" "FC2_226" "C3_226" 
## [1464] "C4_226"  "CP1_226" "CP2_226" "P7_226"  "P8_226"  "P3_226"  "PO7_226"
## [1471] "PO8_226" "O1_226"  "O2_226"  "Fz_226"  "FCz_226" "Cz_226"  "CPz_226"
## [1478] "Pz_226"  "Fp1_227" "Fp2_227" "F3_227"  "F4_227"  "F7_227"  "F8_227" 
## [1485] "FC1_227" "FC2_227" "C3_227"  "C4_227"  "CP1_227" "CP2_227" "P7_227" 
## [1492] "P8_227"  "P3_227"  "PO7_227" "PO8_227" "O1_227"  "O2_227"  "Fz_227" 
## [1499] "FCz_227" "Cz_227"  "CPz_227" "Pz_227"  "Fp1_228" "F3_228"  "F4_228" 
## [1506] "F7_228"  "F8_228"  "FC1_228" "FC2_228" "C3_228"  "C4_228"  "CP1_228"
## [1513] "CP2_228" "P7_228"  "P8_228"  "P3_228"  "PO7_228" "PO8_228" "O1_228" 
## [1520] "O2_228"  "Fz_228"  "FCz_228" "Cz_228"  "CPz_228" "Pz_228"  "Fp1_229"
## [1527] "F3_229"  "F4_229"  "F7_229"  "F8_229"  "FC1_229" "FC2_229" "C3_229" 
## [1534] "C4_229"  "CP1_229" "CP2_229" "P7_229"  "P8_229"  "PO7_229" "PO8_229"
## [1541] "O1_229"  "O2_229"  "Fz_229"  "FCz_229" "Cz_229"  "CPz_229" "Pz_229" 
## [1548] "Fp1_230" "F3_230"  "F4_230"  "F7_230"  "F8_230"  "FC1_230" "FC2_230"
## [1555] "C3_230"  "C4_230"  "CP1_230" "CP2_230" "P7_230"  "P8_230"  "PO7_230"
## [1562] "PO8_230" "O1_230"  "O2_230"  "Fz_230"  "FCz_230" "Cz_230"  "CPz_230"
## [1569] "Pz_230"  "Fp1_231" "F3_231"  "F4_231"  "F7_231"  "F8_231"  "FC1_231"
## [1576] "FC2_231" "C3_231"  "C4_231"  "CP1_231" "CP2_231" "P7_231"  "P8_231" 
## [1583] "PO7_231" "PO8_231" "O1_231"  "O2_231"  "Fz_231"  "FCz_231" "Cz_231" 
## [1590] "CPz_231" "Pz_231"  "Fp1_232" "F3_232"  "F4_232"  "F7_232"  "F8_232" 
## [1597] "FC1_232" "FC2_232" "C3_232"  "C4_232"  "CP1_232" "CP2_232" "P7_232" 
## [1604] "P8_232"  "PO7_232" "PO8_232" "O1_232"  "O2_232"  "Fz_232"  "FCz_232"
## [1611] "Cz_232"  "CPz_232" "Pz_232"  "Fp1_233" "F3_233"  "F4_233"  "F7_233" 
## [1618] "F8_233"  "FC1_233" "FC2_233" "C3_233"  "C4_233"  "CP1_233" "CP2_233"
## [1625] "P7_233"  "P8_233"  "PO7_233" "PO8_233" "O1_233"  "O2_233"  "Fz_233" 
## [1632] "FCz_233" "Cz_233"  "CPz_233" "Pz_233"  "Fp1_234" "F3_234"  "F4_234" 
## [1639] "F7_234"  "F8_234"  "FC1_234" "FC2_234" "C3_234"  "C4_234"  "CP1_234"
## [1646] "CP2_234" "P7_234"  "P8_234"  "PO7_234" "PO8_234" "O1_234"  "O2_234" 
## [1653] "Fz_234"  "FCz_234" "Cz_234"  "CPz_234" "Pz_234"  "Fp1_235" "F3_235" 
## [1660] "F4_235"  "F7_235"  "F8_235"  "FC1_235" "FC2_235" "C3_235"  "C4_235" 
## [1667] "CP1_235" "CP2_235" "P7_235"  "P8_235"  "PO7_235" "PO8_235" "O1_235" 
## [1674] "O2_235"  "Fz_235"  "FCz_235" "Cz_235"  "CPz_235" "Pz_235"  "Fp1_236"
## [1681] "F3_236"  "F4_236"  "F7_236"  "F8_236"  "FC1_236" "FC2_236" "C3_236" 
## [1688] "C4_236"  "CP1_236" "CP2_236" "P7_236"  "P8_236"  "PO7_236" "PO8_236"
## [1695] "O1_236"  "O2_236"  "Fz_236"  "FCz_236" "Cz_236"  "CPz_236" "Pz_236" 
## [1702] "Fp1_237" "F3_237"  "F4_237"  "F7_237"  "F8_237"  "FC1_237" "FC2_237"
## [1709] "C3_237"  "C4_237"  "CP1_237" "CP2_237" "P7_237"  "P8_237"  "PO7_237"
## [1716] "PO8_237" "O1_237"  "O2_237"  "Fz_237"  "FCz_237" "Cz_237"  "CPz_237"
## [1723] "Pz_237"  "Fp1_238" "F3_238"  "F4_238"  "F7_238"  "F8_238"  "FC1_238"
## [1730] "FC2_238" "C3_238"  "C4_238"  "CP1_238" "CP2_238" "P7_238"  "P8_238" 
## [1737] "PO7_238" "PO8_238" "O1_238"  "O2_238"  "Fz_238"  "FCz_238" "Cz_238" 
## [1744] "CPz_238" "Pz_238"  "Fp1_239" "F3_239"  "F4_239"  "F7_239"  "F8_239" 
## [1751] "FC1_239" "FC2_239" "C3_239"  "C4_239"  "CP1_239" "CP2_239" "P7_239" 
## [1758] "P8_239"  "PO7_239" "PO8_239" "O1_239"  "O2_239"  "Fz_239"  "FCz_239"
## [1765] "Cz_239"  "CPz_239" "Pz_239"  "Fp1_240" "F3_240"  "F4_240"  "F7_240" 
## [1772] "F8_240"  "FC1_240" "FC2_240" "C3_240"  "C4_240"  "CP1_240" "CP2_240"
## [1779] "P7_240"  "P8_240"  "PO7_240" "PO8_240" "O1_240"  "O2_240"  "Fz_240" 
## [1786] "FCz_240" "Cz_240"  "CPz_240" "Pz_240"  "Fp1_241" "F3_241"  "F4_241" 
## [1793] "F7_241"  "F8_241"  "FC1_241" "FC2_241" "C3_241"  "C4_241"  "CP1_241"
## [1800] "CP2_241" "P7_241"  "P8_241"  "PO7_241" "PO8_241" "O1_241"  "O2_241" 
## [1807] "Fz_241"  "FCz_241" "Cz_241"  "CPz_241" "Pz_241"  "Fp1_242" "F3_242" 
## [1814] "F4_242"  "F7_242"  "F8_242"  "FC1_242" "FC2_242" "C3_242"  "C4_242" 
## [1821] "CP1_242" "CP2_242" "P7_242"  "P8_242"  "PO7_242" "PO8_242" "O1_242" 
## [1828] "O2_242"  "Fz_242"  "FCz_242" "Cz_242"  "CPz_242" "Pz_242"  "Fp1_243"
## [1835] "F3_243"  "F4_243"  "F7_243"  "F8_243"  "FC1_243" "FC2_243" "C3_243" 
## [1842] "C4_243"  "CP1_243" "CP2_243" "P7_243"  "P8_243"  "PO7_243" "PO8_243"
## [1849] "O1_243"  "O2_243"  "Fz_243"  "FCz_243" "Cz_243"  "CPz_243" "Pz_243" 
## [1856] "Fp1_244" "F3_244"  "F4_244"  "F7_244"  "F8_244"  "FC1_244" "FC2_244"
## [1863] "C3_244"  "C4_244"  "CP1_244" "CP2_244" "P7_244"  "P8_244"  "PO7_244"
## [1870] "PO8_244" "O1_244"  "O2_244"  "Fz_244"  "FCz_244" "Cz_244"  "CPz_244"
## [1877] "Pz_244"  "Fp1_245" "F3_245"  "F4_245"  "F7_245"  "F8_245"  "FC1_245"
## [1884] "FC2_245" "C3_245"  "C4_245"  "CP1_245" "CP2_245" "P7_245"  "P8_245" 
## [1891] "PO7_245" "PO8_245" "O1_245"  "O2_245"  "Fz_245"  "FCz_245" "Cz_245" 
## [1898] "CPz_245" "Pz_245"  "Fp1_246" "F3_246"  "F4_246"  "F7_246"  "F8_246" 
## [1905] "FC1_246" "FC2_246" "C3_246"  "C4_246"  "CP1_246" "CP2_246" "P7_246" 
## [1912] "P8_246"  "PO7_246" "PO8_246" "O1_246"  "O2_246"  "Fz_246"  "FCz_246"
## [1919] "Cz_246"  "CPz_246" "Pz_246"  "F3_247"  "F4_247"  "F7_247"  "FC1_247"
## [1926] "FC2_247" "C4_247"  "CP1_247" "CP2_247" "P7_247"  "P8_247"  "PO7_247"
## [1933] "PO8_247" "O1_247"  "O2_247"  "Fz_247"  "FCz_247" "Cz_247"  "CPz_247"
## [1940] "Pz_247"  "F3_248"  "F4_248"  "F7_248"  "FC1_248" "FC2_248" "C4_248" 
## [1947] "CP1_248" "CP2_248" "P7_248"  "P8_248"  "PO7_248" "PO8_248" "O1_248" 
## [1954] "O2_248"  "Fz_248"  "FCz_248" "Cz_248"  "CPz_248" "Pz_248"  "F3_249" 
## [1961] "F4_249"  "F7_249"  "FC1_249" "FC2_249" "C4_249"  "CP1_249" "CP2_249"
## [1968] "P7_249"  "P8_249"  "PO7_249" "PO8_249" "O1_249"  "O2_249"  "Fz_249" 
## [1975] "FCz_249" "Cz_249"  "CPz_249" "Pz_249"  "F3_250"  "F4_250"  "F7_250" 
## [1982] "FC1_250" "FC2_250" "CP1_250" "CP2_250" "P7_250"  "P8_250"  "PO7_250"
## [1989] "PO8_250" "O1_250"  "O2_250"  "Fz_250"  "FCz_250" "Cz_250"  "CPz_250"
## [1996] "Pz_250"  "F3_251"  "F4_251"  "F7_251"  "FC1_251" "FC2_251" "CP1_251"
## [2003] "CP2_251" "P7_251"  "P8_251"  "PO7_251" "PO8_251" "O1_251"  "O2_251" 
## [2010] "Fz_251"  "FCz_251" "Cz_251"  "CPz_251" "Pz_251"  "F3_252"  "F4_252" 
## [2017] "F7_252"  "FC1_252" "FC2_252" "CP1_252" "CP2_252" "P7_252"  "P8_252" 
## [2024] "PO7_252" "PO8_252" "O1_252"  "O2_252"  "Fz_252"  "FCz_252" "Cz_252" 
## [2031] "CPz_252" "Pz_252"  "F3_253"  "FC1_253" "FC2_253" "CP1_253" "CP2_253"
## [2038] "P7_253"  "P8_253"  "PO7_253" "PO8_253" "O2_253"  "Fz_253"  "FCz_253"
## [2045] "Cz_253"  "CPz_253" "Pz_253"  "F3_254"  "FC1_254" "FC2_254" "CP1_254"
## [2052] "CP2_254" "P7_254"  "P8_254"  "PO7_254" "PO8_254" "O2_254"  "Fz_254" 
## [2059] "FCz_254" "Cz_254"  "CPz_254" "Pz_254"  "F3_255"  "FC1_255" "FC2_255"
## [2066] "CP1_255" "CP2_255" "P7_255"  "P8_255"  "PO7_255" "PO8_255" "O2_255" 
## [2073] "Fz_255"  "FCz_255" "Cz_255"  "CPz_255" "Pz_255"  "FC1_256" "FC2_256"
## [2080] "CP1_256" "CP2_256" "P7_256"  "P8_256"  "PO7_256" "PO8_256" "O2_256" 
## [2087] "Fz_256"  "FCz_256" "Cz_256"  "CPz_256" "Pz_256"  "FC1_257" "FC2_257"
## [2094] "CP1_257" "CP2_257" "P7_257"  "P8_257"  "PO7_257" "PO8_257" "O2_257" 
## [2101] "Fz_257"  "FCz_257" "Cz_257"  "CPz_257" "Pz_257"  "FC1_258" "FC2_258"
## [2108] "CP1_258" "CP2_258" "P7_258"  "P8_258"  "PO7_258" "PO8_258" "O1_258" 
## [2115] "O2_258"  "Fz_258"  "FCz_258" "Cz_258"  "CPz_258" "Pz_258"  "FC1_259"
## [2122] "FC2_259" "CP1_259" "CP2_259" "P7_259"  "P8_259"  "PO7_259" "PO8_259"
## [2129] "O1_259"  "O2_259"  "Fz_259"  "FCz_259" "Cz_259"  "CPz_259" "Pz_259" 
## [2136] "FC1_260" "FC2_260" "CP1_260" "CP2_260" "P7_260"  "P8_260"  "PO7_260"
## [2143] "PO8_260" "O1_260"  "O2_260"  "Fz_260"  "FCz_260" "Cz_260"  "CPz_260"
## [2150] "Pz_260"  "FC1_261" "FC2_261" "CP1_261" "CP2_261" "P7_261"  "P8_261" 
## [2157] "PO7_261" "PO8_261" "O1_261"  "Fz_261"  "FCz_261" "Cz_261"  "CPz_261"
## [2164] "Pz_261"  "FC1_262" "FC2_262" "CP1_262" "CP2_262" "P7_262"  "P8_262" 
## [2171] "PO7_262" "PO8_262" "O1_262"  "Fz_262"  "FCz_262" "Cz_262"  "CPz_262"
## [2178] "Pz_262"  "FC1_263" "FC2_263" "CP1_263" "CP2_263" "P7_263"  "P8_263" 
## [2185] "PO7_263" "PO8_263" "Fz_263"  "FCz_263" "Cz_263"  "CPz_263" "Pz_263" 
## [2192] "FC1_264" "FC2_264" "CP1_264" "CP2_264" "P7_264"  "P8_264"  "PO7_264"
## [2199] "PO8_264" "Fz_264"  "FCz_264" "Cz_264"  "CPz_264" "Pz_264"  "FC1_265"
## [2206] "FC2_265" "CP1_265" "CP2_265" "P7_265"  "P8_265"  "PO7_265" "PO8_265"
## [2213] "Fz_265"  "FCz_265" "Cz_265"  "CPz_265" "Pz_265"  "FC2_266" "CP1_266"
## [2220] "CP2_266" "P7_266"  "P8_266"  "PO7_266" "PO8_266" "Fz_266"  "FCz_266"
## [2227] "Cz_266"  "CPz_266" "Pz_266"  "FC2_267" "CP1_267" "CP2_267" "P7_267" 
## [2234] "P8_267"  "PO7_267" "PO8_267" "Fz_267"  "FCz_267" "Cz_267"  "CPz_267"
## [2241] "Pz_267"  "FC2_268" "CP1_268" "CP2_268" "P7_268"  "P8_268"  "PO7_268"
## [2248] "PO8_268" "FCz_268" "Cz_268"  "CPz_268" "Pz_268"  "FC2_269" "CP1_269"
## [2255] "CP2_269" "P7_269"  "P8_269"  "PO7_269" "PO8_269" "FCz_269" "Cz_269" 
## [2262] "CPz_269" "Pz_269"  "FC2_270" "CP1_270" "CP2_270" "P7_270"  "P8_270" 
## [2269] "PO7_270" "PO8_270" "FCz_270" "Cz_270"  "CPz_270" "Pz_270"  "FC2_271"
## [2276] "CP1_271" "CP2_271" "P7_271"  "P8_271"  "PO7_271" "PO8_271" "FCz_271"
## [2283] "Cz_271"  "CPz_271" "Pz_271"  "FC2_272" "CP1_272" "CP2_272" "P7_272" 
## [2290] "P8_272"  "PO7_272" "PO8_272" "FCz_272" "Cz_272"  "CPz_272" "Pz_272" 
## [2297] "FC2_273" "CP1_273" "CP2_273" "P7_273"  "P8_273"  "PO7_273" "PO8_273"
## [2304] "FCz_273" "Cz_273"  "CPz_273" "Pz_273"  "FC2_274" "CP1_274" "CP2_274"
## [2311] "P7_274"  "P8_274"  "PO7_274" "PO8_274" "FCz_274" "Cz_274"  "CPz_274"
## [2318] "Pz_274"  "FC2_275" "CP1_275" "CP2_275" "P7_275"  "P8_275"  "PO7_275"
## [2325] "PO8_275" "FCz_275" "Cz_275"  "CPz_275" "Pz_275"  "FC2_276" "CP1_276"
## [2332] "CP2_276" "P7_276"  "P8_276"  "PO7_276" "PO8_276" "FCz_276" "Cz_276" 
## [2339] "CPz_276" "Pz_276"  "FC2_277" "CP1_277" "CP2_277" "P7_277"  "P8_277" 
## [2346] "PO7_277" "PO8_277" "FCz_277" "Cz_277"  "CPz_277" "Pz_277"  "FC2_278"
## [2353] "CP1_278" "CP2_278" "P7_278"  "P8_278"  "PO7_278" "PO8_278" "FCz_278"
## [2360] "Cz_278"  "CPz_278" "Pz_278"  "FC2_279" "CP1_279" "CP2_279" "P7_279" 
## [2367] "P8_279"  "PO7_279" "PO8_279" "FCz_279" "Cz_279"  "CPz_279" "Pz_279" 
## [2374] "CP1_280" "CP2_280" "P7_280"  "P8_280"  "PO7_280" "PO8_280" "FCz_280"
## [2381] "Cz_280"  "CPz_280" "Pz_280"  "CP1_281" "CP2_281" "P7_281"  "P8_281" 
## [2388] "PO7_281" "PO8_281" "FCz_281" "Cz_281"  "CPz_281" "Pz_281"  "CP1_282"
## [2395] "CP2_282" "P7_282"  "P8_282"  "PO7_282" "PO8_282" "FCz_282" "Cz_282" 
## [2402] "CPz_282" "Pz_282"  "CP1_283" "CP2_283" "P7_283"  "P8_283"  "PO7_283"
## [2409] "PO8_283" "FCz_283" "Cz_283"  "CPz_283" "Pz_283"  "CP1_284" "CP2_284"
## [2416] "P7_284"  "P8_284"  "PO7_284" "PO8_284" "FCz_284" "Cz_284"  "CPz_284"
## [2423] "Pz_284"  "CP1_285" "CP2_285" "P7_285"  "P8_285"  "PO7_285" "PO8_285"
## [2430] "FCz_285" "Cz_285"  "CPz_285" "Pz_285"  "CP1_286" "CP2_286" "P7_286" 
## [2437] "P8_286"  "PO7_286" "PO8_286" "FCz_286" "Cz_286"  "CPz_286" "Pz_286" 
## [2444] "CP1_287" "CP2_287" "P7_287"  "P8_287"  "PO7_287" "PO8_287" "FCz_287"
## [2451] "Cz_287"  "CPz_287" "Pz_287"  "CP1_288" "CP2_288" "P7_288"  "P8_288" 
## [2458] "PO7_288" "PO8_288" "FCz_288" "Cz_288"  "CPz_288" "Pz_288"  "CP1_289"
## [2465] "CP2_289" "P7_289"  "P8_289"  "PO7_289" "PO8_289" "FCz_289" "Cz_289" 
## [2472] "CPz_289" "Pz_289"  "FC2_290" "CP1_290" "CP2_290" "P7_290"  "P8_290" 
## [2479] "PO7_290" "PO8_290" "FCz_290" "Cz_290"  "CPz_290" "Pz_290"  "FC2_291"
## [2486] "CP1_291" "CP2_291" "P7_291"  "P8_291"  "PO7_291" "PO8_291" "FCz_291"
## [2493] "Cz_291"  "CPz_291" "Pz_291"  "FC2_292" "CP1_292" "CP2_292" "P7_292" 
## [2500] "P8_292"  "PO7_292" "PO8_292" "FCz_292" "Cz_292"  "CPz_292" "Pz_292" 
## [2507] "FC2_293" "CP1_293" "CP2_293" "P7_293"  "P8_293"  "PO7_293" "PO8_293"
## [2514] "Fz_293"  "FCz_293" "Cz_293"  "CPz_293" "Pz_293"  "FC2_294" "CP1_294"
## [2521] "CP2_294" "P7_294"  "P8_294"  "PO7_294" "PO8_294" "Fz_294"  "FCz_294"
## [2528] "Cz_294"  "CPz_294" "Pz_294"  "FC2_295" "CP1_295" "CP2_295" "P7_295" 
## [2535] "P8_295"  "PO7_295" "PO8_295" "Fz_295"  "FCz_295" "Cz_295"  "CPz_295"
## [2542] "Pz_295"  "FC2_296" "CP1_296" "CP2_296" "P7_296"  "P8_296"  "PO7_296"
## [2549] "PO8_296" "Fz_296"  "FCz_296" "Cz_296"  "CPz_296" "Pz_296"  "FC2_297"
## [2556] "CP1_297" "CP2_297" "P7_297"  "P8_297"  "PO7_297" "PO8_297" "Fz_297" 
## [2563] "FCz_297" "Cz_297"  "CPz_297" "Pz_297"  "FC2_298" "CP1_298" "CP2_298"
## [2570] "P7_298"  "P8_298"  "PO7_298" "PO8_298" "Fz_298"  "FCz_298" "Cz_298" 
## [2577] "CPz_298" "Pz_298"  "FC2_299" "CP1_299" "CP2_299" "P7_299"  "P8_299" 
## [2584] "PO7_299" "PO8_299" "O1_299"  "Fz_299"  "FCz_299" "Cz_299"  "CPz_299"
## [2591] "Pz_299"  "FC2_300" "CP1_300" "CP2_300" "P7_300"  "P8_300"  "PO7_300"
## [2598] "PO8_300" "O1_300"  "Fz_300"  "FCz_300" "Cz_300"  "CPz_300" "Pz_300" 
## [2605] "FC1_301" "FC2_301" "CP1_301" "CP2_301" "P7_301"  "P8_301"  "PO7_301"
## [2612] "PO8_301" "O1_301"  "Fz_301"  "FCz_301" "Cz_301"  "CPz_301" "Pz_301" 
## [2619] "FC1_302" "FC2_302" "CP1_302" "CP2_302" "P7_302"  "P8_302"  "PO7_302"
## [2626] "PO8_302" "O1_302"  "Fz_302"  "FCz_302" "Cz_302"  "CPz_302" "Pz_302" 
## [2633] "FC1_303" "FC2_303" "CP1_303" "CP2_303" "P7_303"  "P8_303"  "PO7_303"
## [2640] "PO8_303" "O1_303"  "Fz_303"  "FCz_303" "Cz_303"  "CPz_303" "Pz_303" 
## [2647] "FC1_304" "FC2_304" "CP1_304" "CP2_304" "P7_304"  "P8_304"  "PO7_304"
## [2654] "PO8_304" "O1_304"  "Fz_304"  "FCz_304" "Cz_304"  "CPz_304" "Pz_304" 
## [2661] "FC1_305" "FC2_305" "CP1_305" "CP2_305" "P7_305"  "P8_305"  "PO7_305"
## [2668] "PO8_305" "O1_305"  "Fz_305"  "FCz_305" "Cz_305"  "CPz_305" "Pz_305" 
## [2675] "FC1_306" "FC2_306" "CP1_306" "CP2_306" "P7_306"  "P8_306"  "PO7_306"
## [2682] "PO8_306" "O1_306"  "Fz_306"  "FCz_306" "Cz_306"  "CPz_306" "Pz_306" 
## [2689] "FC1_307" "FC2_307" "CP1_307" "CP2_307" "P7_307"  "P8_307"  "PO7_307"
## [2696] "PO8_307" "O1_307"  "Fz_307"  "FCz_307" "Cz_307"  "CPz_307" "Pz_307" 
## [2703] "FC2_308" "CP1_308" "CP2_308" "P7_308"  "P8_308"  "PO7_308" "PO8_308"
## [2710] "O1_308"  "Fz_308"  "FCz_308" "Cz_308"  "CPz_308" "Pz_308"  "FC2_309"
## [2717] "CP1_309" "CP2_309" "P7_309"  "P8_309"  "PO7_309" "PO8_309" "O1_309" 
## [2724] "Fz_309"  "FCz_309" "Cz_309"  "CPz_309" "Pz_309"  "FC2_310" "T7_310" 
## [2731] "CP1_310" "CP2_310" "P7_310"  "P8_310"  "PO7_310" "PO8_310" "O1_310" 
## [2738] "Fz_310"  "FCz_310" "Cz_310"  "CPz_310" "Pz_310"  "FC2_311" "T7_311" 
## [2745] "CP1_311" "CP2_311" "P7_311"  "P8_311"  "PO7_311" "PO8_311" "O1_311" 
## [2752] "Fz_311"  "FCz_311" "Cz_311"  "CPz_311" "Pz_311"  "FC1_312" "FC2_312"
## [2759] "T7_312"  "CP1_312" "CP2_312" "P7_312"  "P8_312"  "PO7_312" "PO8_312"
## [2766] "O1_312"  "Fz_312"  "FCz_312" "Cz_312"  "CPz_312" "Pz_312"  "F4_313" 
## [2773] "FC1_313" "FC2_313" "T7_313"  "CP1_313" "CP2_313" "P7_313"  "P8_313" 
## [2780] "PO7_313" "PO8_313" "O1_313"  "Fz_313"  "FCz_313" "Cz_313"  "CPz_313"
## [2787] "Pz_313"  "F4_314"  "FC1_314" "FC2_314" "T7_314"  "T8_314"  "CP1_314"
## [2794] "CP2_314" "P7_314"  "P8_314"  "PO7_314" "PO8_314" "O1_314"  "Fz_314" 
## [2801] "FCz_314" "Cz_314"  "CPz_314" "Pz_314"  "F4_315"  "FC1_315" "FC2_315"
## [2808] "T8_315"  "CP1_315" "CP2_315" "P7_315"  "P8_315"  "PO7_315" "PO8_315"
## [2815] "O1_315"  "Fz_315"  "FCz_315" "Cz_315"  "CPz_315" "Pz_315"  "F4_316" 
## [2822] "FC1_316" "FC2_316" "T8_316"  "CP1_316" "CP2_316" "P7_316"  "P8_316" 
## [2829] "PO7_316" "PO8_316" "O1_316"  "Fz_316"  "FCz_316" "Cz_316"  "CPz_316"
## [2836] "Pz_316"  "F4_317"  "FC1_317" "FC2_317" "T8_317"  "CP1_317" "CP2_317"
## [2843] "P7_317"  "P8_317"  "PO7_317" "PO8_317" "O1_317"  "Fz_317"  "FCz_317"
## [2850] "Cz_317"  "CPz_317" "Pz_317"  "FC1_318" "FC2_318" "T8_318"  "CP1_318"
## [2857] "CP2_318" "P7_318"  "P8_318"  "PO7_318" "PO8_318" "O1_318"  "Fz_318" 
## [2864] "FCz_318" "Cz_318"  "CPz_318" "Pz_318"  "FC1_319" "FC2_319" "T8_319" 
## [2871] "CP1_319" "CP2_319" "P7_319"  "P8_319"  "PO7_319" "PO8_319" "O1_319" 
## [2878] "Fz_319"  "FCz_319" "Cz_319"  "CPz_319" "Pz_319"  "FC2_320" "CP1_320"
## [2885] "CP2_320" "P7_320"  "P8_320"  "PO7_320" "PO8_320" "O1_320"  "Fz_320" 
## [2892] "FCz_320" "Cz_320"  "CPz_320" "Pz_320"  "CP1_321" "CP2_321" "P7_321" 
## [2899] "P8_321"  "PO7_321" "PO8_321" "Fz_321"  "FCz_321" "Cz_321"  "CPz_321"
## [2906] "Pz_321"  "CP1_322" "CP2_322" "P7_322"  "P8_322"  "PO7_322" "PO8_322"
## [2913] "Fz_322"  "FCz_322" "Cz_322"  "CPz_322" "Pz_322"  "CP1_323" "CP2_323"
## [2920] "P7_323"  "P8_323"  "PO7_323" "PO8_323" "Fz_323"  "FCz_323" "Cz_323" 
## [2927] "CPz_323" "Pz_323"  "CP1_324" "CP2_324" "P7_324"  "P8_324"  "PO7_324"
## [2934] "PO8_324" "Fz_324"  "FCz_324" "Cz_324"  "CPz_324" "Pz_324"  "CP1_325"
## [2941] "CP2_325" "P7_325"  "P8_325"  "PO7_325" "PO8_325" "Fz_325"  "FCz_325"
## [2948] "Cz_325"  "CPz_325" "Pz_325"  "CP1_326" "CP2_326" "P7_326"  "P8_326" 
## [2955] "PO7_326" "PO8_326" "Fz_326"  "FCz_326" "Cz_326"  "CPz_326" "Pz_326" 
## [2962] "CP1_327" "CP2_327" "P7_327"  "P8_327"  "PO7_327" "PO8_327" "Fz_327" 
## [2969] "FCz_327" "Cz_327"  "CPz_327" "Pz_327"  "T8_328"  "CP1_328" "CP2_328"
## [2976] "P7_328"  "P8_328"  "PO7_328" "PO8_328" "O1_328"  "Fz_328"  "FCz_328"
## [2983] "Cz_328"  "CPz_328" "Pz_328"  "T8_329"  "CP1_329" "CP2_329" "P7_329" 
## [2990] "P8_329"  "PO7_329" "PO8_329" "O1_329"  "Fz_329"  "FCz_329" "Cz_329" 
## [2997] "CPz_329" "Pz_329"  "CP1_330" "CP2_330" "P7_330"  "P8_330"  "PO7_330"
## [3004] "PO8_330" "O1_330"  "Fz_330"  "FCz_330" "Cz_330"  "CPz_330" "Pz_330" 
## [3011] "CP1_331" "CP2_331" "P7_331"  "P8_331"  "PO7_331" "PO8_331" "O1_331" 
## [3018] "O2_331"  "Fz_331"  "FCz_331" "Cz_331"  "CPz_331" "Pz_331"  "CP1_332"
## [3025] "CP2_332" "P7_332"  "P8_332"  "PO7_332" "PO8_332" "O1_332"  "O2_332" 
## [3032] "Fz_332"  "FCz_332" "Cz_332"  "CPz_332" "Pz_332"  "CP1_333" "CP2_333"
## [3039] "P7_333"  "P8_333"  "PO7_333" "PO8_333" "O1_333"  "O2_333"  "Fz_333" 
## [3046] "FCz_333" "Cz_333"  "CPz_333" "Pz_333"  "CP1_334" "CP2_334" "P7_334" 
## [3053] "P8_334"  "PO7_334" "PO8_334" "O1_334"  "O2_334"  "Fz_334"  "FCz_334"
## [3060] "Cz_334"  "CPz_334" "Pz_334"  "CP1_335" "CP2_335" "P7_335"  "P8_335" 
## [3067] "PO7_335" "PO8_335" "O1_335"  "O2_335"  "Fz_335"  "FCz_335" "Cz_335" 
## [3074] "CPz_335" "Pz_335"  "CP1_336" "CP2_336" "P7_336"  "P8_336"  "PO7_336"
## [3081] "PO8_336" "O1_336"  "O2_336"  "Fz_336"  "FCz_336" "Cz_336"  "CPz_336"
## [3088] "Pz_336"  "CP1_337" "CP2_337" "P7_337"  "P8_337"  "PO7_337" "PO8_337"
## [3095] "O1_337"  "Fz_337"  "FCz_337" "Cz_337"  "CPz_337" "Pz_337"  "CP1_338"
## [3102] "CP2_338" "P7_338"  "P8_338"  "PO7_338" "PO8_338" "O1_338"  "Fz_338" 
## [3109] "FCz_338" "Cz_338"  "CPz_338" "Pz_338"  "CP1_339" "CP2_339" "P7_339" 
## [3116] "P8_339"  "PO7_339" "PO8_339" "O1_339"  "Fz_339"  "FCz_339" "Cz_339" 
## [3123] "CPz_339" "Pz_339"  "CP1_340" "CP2_340" "P7_340"  "P8_340"  "PO7_340"
## [3130] "PO8_340" "O1_340"  "Fz_340"  "FCz_340" "Cz_340"  "CPz_340" "Pz_340" 
## [3137] "CP1_341" "CP2_341" "P7_341"  "P8_341"  "PO7_341" "PO8_341" "O1_341" 
## [3144] "FCz_341" "Cz_341"  "CPz_341" "Pz_341"  "CP1_342" "CP2_342" "P7_342" 
## [3151] "P8_342"  "PO7_342" "O1_342"  "FCz_342" "Cz_342"  "CPz_342" "Pz_342" 
## [3158] "CP1_343" "CP2_343" "P7_343"  "P8_343"  "PO7_343" "O1_343"  "Cz_343" 
## [3165] "CPz_343" "Pz_343"  "CP1_344" "CP2_344" "P7_344"  "P8_344"  "PO7_344"
## [3172] "O1_344"  "Cz_344"  "CPz_344" "Pz_344"  "CP1_345" "CP2_345" "P7_345" 
## [3179] "P8_345"  "PO7_345" "O1_345"  "Cz_345"  "CPz_345" "Pz_345"  "CP1_346"
## [3186] "CP2_346" "P7_346"  "P8_346"  "PO7_346" "O1_346"  "Cz_346"  "CPz_346"
## [3193] "Pz_346"  "CP1_347" "CP2_347" "P7_347"  "P8_347"  "PO7_347" "O1_347" 
## [3200] "Cz_347"  "CPz_347" "Pz_347"  "CP1_348" "CP2_348" "P7_348"  "P8_348" 
## [3207] "PO7_348" "O1_348"  "Cz_348"  "CPz_348" "Pz_348"  "CP1_349" "CP2_349"
## [3214] "P7_349"  "P8_349"  "PO7_349" "O1_349"  "Fz_349"  "FCz_349" "Cz_349" 
## [3221] "CPz_349" "Pz_349"  "CP1_350" "CP2_350" "P7_350"  "P8_350"  "PO7_350"
## [3228] "O1_350"  "Fz_350"  "FCz_350" "Cz_350"  "CPz_350" "Pz_350"  "CP1_351"
## [3235] "CP2_351" "P7_351"  "P8_351"  "PO7_351" "O1_351"  "Fz_351"  "FCz_351"
## [3242] "Cz_351"  "CPz_351" "Pz_351"  "CP1_352" "CP2_352" "P7_352"  "P8_352" 
## [3249] "PO7_352" "O1_352"  "Fz_352"  "FCz_352" "Cz_352"  "CPz_352" "Pz_352" 
## [3256] "CP1_353" "CP2_353" "P7_353"  "P8_353"  "PO7_353" "O1_353"  "Fz_353" 
## [3263] "FCz_353" "Cz_353"  "CPz_353" "Pz_353"  "CP1_354" "CP2_354" "P7_354" 
## [3270] "P8_354"  "PO7_354" "O1_354"  "Fz_354"  "FCz_354" "Cz_354"  "CPz_354"
## [3277] "Pz_354"  "T7_355"  "CP1_355" "CP2_355" "P7_355"  "P8_355"  "PO7_355"
## [3284] "O1_355"  "Fz_355"  "FCz_355" "Cz_355"  "CPz_355" "Pz_355"  "T7_356" 
## [3291] "CP1_356" "CP2_356" "P7_356"  "P8_356"  "PO7_356" "O1_356"  "Fz_356" 
## [3298] "FCz_356" "Cz_356"  "CPz_356" "Pz_356"  "T7_357"  "CP1_357" "CP2_357"
## [3305] "P7_357"  "P8_357"  "P4_357"  "PO7_357" "O1_357"  "Fz_357"  "FCz_357"
## [3312] "Cz_357"  "CPz_357" "Pz_357"  "CP1_358" "CP2_358" "P7_358"  "P8_358" 
## [3319] "P4_358"  "PO7_358" "O1_358"  "Fz_358"  "FCz_358" "Cz_358"  "CPz_358"
## [3326] "Pz_358"  "CP1_359" "CP2_359" "P7_359"  "P8_359"  "P4_359"  "PO7_359"
## [3333] "O1_359"  "Fz_359"  "FCz_359" "Cz_359"  "CPz_359" "Pz_359"  "CP1_360"
## [3340] "CP2_360" "P7_360"  "P8_360"  "P4_360"  "PO7_360" "O1_360"  "Fz_360" 
## [3347] "FCz_360" "Cz_360"  "CPz_360" "Pz_360"  "CP1_361" "CP2_361" "P7_361" 
## [3354] "P8_361"  "P4_361"  "PO7_361" "O1_361"  "Fz_361"  "FCz_361" "Cz_361" 
## [3361] "CPz_361" "Pz_361"  "CP2_362" "P7_362"  "P8_362"  "P4_362"  "PO7_362"
## [3368] "O1_362"  "Fz_362"  "FCz_362" "Cz_362"  "CPz_362" "Pz_362"  "CP2_363"
## [3375] "P7_363"  "P8_363"  "PO7_363" "O1_363"  "Fz_363"  "FCz_363" "Cz_363" 
## [3382] "CPz_363" "Pz_363"  "CP2_364" "P7_364"  "P8_364"  "PO7_364" "O1_364" 
## [3389] "Fz_364"  "FCz_364" "Cz_364"  "CPz_364" "Pz_364"  "CP2_365" "P7_365" 
## [3396] "P8_365"  "PO7_365" "O1_365"  "Fz_365"  "FCz_365" "Cz_365"  "CPz_365"
## [3403] "Pz_365"  "CP2_366" "P7_366"  "P8_366"  "PO7_366" "O1_366"  "Fz_366" 
## [3410] "FCz_366" "Cz_366"  "CPz_366" "Pz_366"  "FC1_367" "CP2_367" "P7_367" 
## [3417] "P8_367"  "PO7_367" "Fz_367"  "FCz_367" "Cz_367"  "CPz_367" "Pz_367" 
## [3424] "FC1_368" "CP2_368" "P7_368"  "P8_368"  "PO7_368" "Fz_368"  "FCz_368"
## [3431] "Cz_368"  "CPz_368" "Pz_368"  "FC1_369" "T7_369"  "CP1_369" "CP2_369"
## [3438] "P7_369"  "P8_369"  "PO7_369" "Fz_369"  "FCz_369" "Cz_369"  "CPz_369"
## [3445] "Pz_369"  "FC1_370" "T7_370"  "CP1_370" "CP2_370" "P7_370"  "P8_370" 
## [3452] "PO7_370" "Fz_370"  "FCz_370" "Cz_370"  "CPz_370" "Pz_370"  "FC1_371"
## [3459] "T7_371"  "CP1_371" "CP2_371" "P7_371"  "P8_371"  "PO7_371" "Fz_371" 
## [3466] "FCz_371" "Cz_371"  "CPz_371" "Pz_371"  "FC1_372" "T7_372"  "CP1_372"
## [3473] "CP2_372" "P7_372"  "P8_372"  "PO7_372" "Fz_372"  "FCz_372" "Cz_372" 
## [3480] "CPz_372" "Pz_372"  "FC1_373" "T7_373"  "CP1_373" "CP2_373" "P7_373" 
## [3487] "P8_373"  "PO7_373" "Fz_373"  "FCz_373" "Cz_373"  "CPz_373" "Pz_373" 
## [3494] "FC1_374" "T7_374"  "CP1_374" "CP2_374" "P7_374"  "P8_374"  "PO7_374"
## [3501] "Fz_374"  "FCz_374" "Cz_374"  "CPz_374" "Pz_374"  "FC1_375" "T7_375" 
## [3508] "CP1_375" "CP2_375" "P7_375"  "P8_375"  "PO7_375" "Fz_375"  "FCz_375"
## [3515] "Cz_375"  "CPz_375" "Pz_375"  "FC1_376" "T7_376"  "CP1_376" "CP2_376"
## [3522] "P7_376"  "P8_376"  "PO7_376" "Fz_376"  "FCz_376" "Cz_376"  "CPz_376"
## [3529] "Pz_376"  "FC1_377" "T7_377"  "CP1_377" "CP2_377" "P7_377"  "P8_377" 
## [3536] "PO7_377" "Fz_377"  "FCz_377" "Cz_377"  "CPz_377" "Pz_377"  "FC1_378"
## [3543] "CP1_378" "CP2_378" "P7_378"  "P8_378"  "PO7_378" "Fz_378"  "FCz_378"
## [3550] "Cz_378"  "CPz_378" "Pz_378"  "FC1_379" "CP1_379" "CP2_379" "P7_379" 
## [3557] "P8_379"  "PO7_379" "Fz_379"  "FCz_379" "Cz_379"  "CPz_379" "Pz_379" 
## [3564] "FC1_380" "CP1_380" "P7_380"  "P8_380"  "PO7_380" "Fz_380"  "FCz_380"
## [3571] "Cz_380"  "CPz_380" "Pz_380"  "FC1_381" "CP1_381" "P7_381"  "P8_381" 
## [3578] "PO7_381" "Fz_381"  "FCz_381" "Cz_381"  "CPz_381" "Pz_381"  "FC1_382"
## [3585] "CP1_382" "P7_382"  "P8_382"  "PO7_382" "Fz_382"  "FCz_382" "Cz_382" 
## [3592] "CPz_382" "Pz_382"  "FC1_383" "CP1_383" "P7_383"  "P8_383"  "PO7_383"
## [3599] "Fz_383"  "FCz_383" "Cz_383"  "CPz_383" "Pz_383"  "FC1_384" "CP1_384"
## [3606] "P7_384"  "P8_384"  "PO7_384" "Fz_384"  "FCz_384" "Cz_384"  "CPz_384"
## [3613] "Pz_384"  "FC1_385" "CP1_385" "CP2_385" "P7_385"  "P8_385"  "PO7_385"
## [3620] "Fz_385"  "FCz_385" "Cz_385"  "CPz_385" "Pz_385"  "FC1_386" "CP1_386"
## [3627] "CP2_386" "P7_386"  "P8_386"  "PO7_386" "Fz_386"  "FCz_386" "Cz_386" 
## [3634] "CPz_386" "Pz_386"  "FC1_387" "T7_387"  "CP1_387" "CP2_387" "P7_387" 
## [3641] "P8_387"  "PO7_387" "Fz_387"  "FCz_387" "Cz_387"  "CPz_387" "Pz_387" 
## [3648] "FC1_388" "T7_388"  "CP1_388" "CP2_388" "P7_388"  "P8_388"  "PO7_388"
## [3655] "Fz_388"  "FCz_388" "Cz_388"  "CPz_388" "Pz_388"  "FC1_389" "T7_389" 
## [3662] "CP1_389" "CP2_389" "P7_389"  "P8_389"  "P4_389"  "PO7_389" "Fz_389" 
## [3669] "FCz_389" "Cz_389"  "CPz_389" "Pz_389"  "FC1_390" "T7_390"  "CP1_390"
## [3676] "CP2_390" "P7_390"  "P8_390"  "P4_390"  "PO7_390" "Fz_390"  "FCz_390"
## [3683] "Cz_390"  "CPz_390" "Pz_390"  "FC1_391" "CP1_391" "CP2_391" "P7_391" 
## [3690] "P8_391"  "P4_391"  "PO7_391" "Fz_391"  "FCz_391" "Cz_391"  "CPz_391"
## [3697] "Pz_391"  "FC1_392" "CP1_392" "CP2_392" "P7_392"  "P8_392"  "P4_392" 
## [3704] "PO7_392" "Fz_392"  "FCz_392" "Cz_392"  "CPz_392" "Pz_392"  "FC1_393"
## [3711] "CP1_393" "CP2_393" "P7_393"  "P8_393"  "P4_393"  "PO7_393" "Fz_393" 
## [3718] "FCz_393" "Cz_393"  "CPz_393" "Pz_393"  "FC1_394" "CP1_394" "CP2_394"
## [3725] "P7_394"  "P8_394"  "P4_394"  "PO7_394" "Fz_394"  "FCz_394" "Cz_394" 
## [3732] "CPz_394" "Pz_394"  "FC1_395" "CP1_395" "CP2_395" "P7_395"  "P8_395" 
## [3739] "P4_395"  "PO7_395" "Fz_395"  "FCz_395" "Cz_395"  "CPz_395" "Pz_395" 
## [3746] "CP1_396" "CP2_396" "P7_396"  "P8_396"  "P4_396"  "PO7_396" "Fz_396" 
## [3753] "FCz_396" "Cz_396"  "CPz_396" "Pz_396"  "CP1_397" "CP2_397" "P7_397" 
## [3760] "P8_397"  "P4_397"  "PO7_397" "Fz_397"  "FCz_397" "Cz_397"  "CPz_397"
## [3767] "Pz_397"  "CP1_398" "CP2_398" "P7_398"  "P8_398"  "P4_398"  "PO7_398"
## [3774] "Fz_398"  "FCz_398" "Cz_398"  "CPz_398" "Pz_398"  "CP1_399" "CP2_399"
## [3781] "P7_399"  "P8_399"  "P4_399"  "PO7_399" "Fz_399"  "FCz_399" "Cz_399" 
## [3788] "CPz_399" "Pz_399"  "CP1_400" "CP2_400" "P7_400"  "P8_400"  "P4_400" 
## [3795] "PO7_400" "Cz_400"  "CPz_400" "Pz_400"  "CP1_401" "CP2_401" "P7_401" 
## [3802] "P8_401"  "P3_401"  "P4_401"  "PO7_401" "Cz_401"  "CPz_401" "Pz_401" 
## [3809] "CP1_402" "CP2_402" "P7_402"  "P8_402"  "P3_402"  "P4_402"  "PO7_402"
## [3816] "Cz_402"  "CPz_402" "Pz_402"  "CP1_403" "CP2_403" "P7_403"  "P8_403" 
## [3823] "P3_403"  "P4_403"  "PO7_403" "Fz_403"  "Cz_403"  "CPz_403" "Pz_403" 
## [3830] "CP1_404" "CP2_404" "P7_404"  "P8_404"  "P3_404"  "P4_404"  "PO7_404"
## [3837] "Fz_404"  "Cz_404"  "CPz_404" "Pz_404"  "T7_405"  "CP1_405" "CP2_405"
## [3844] "P7_405"  "P8_405"  "P3_405"  "P4_405"  "PO7_405" "Fz_405"  "FCz_405"
## [3851] "Cz_405"  "CPz_405" "Pz_405"  "FC1_406" "T7_406"  "CP1_406" "CP2_406"
## [3858] "P7_406"  "P8_406"  "P3_406"  "P4_406"  "PO7_406" "Fz_406"  "FCz_406"
## [3865] "Cz_406"  "CPz_406" "Pz_406"  "FC1_407" "T7_407"  "CP1_407" "CP2_407"
## [3872] "P7_407"  "P8_407"  "P3_407"  "P4_407"  "PO7_407" "Fz_407"  "FCz_407"
## [3879] "Cz_407"  "CPz_407" "Pz_407"  "FC1_408" "T7_408"  "CP1_408" "CP2_408"
## [3886] "P7_408"  "P8_408"  "P3_408"  "P4_408"  "PO7_408" "Fz_408"  "FCz_408"
## [3893] "Cz_408"  "CPz_408" "Pz_408"  "FC1_409" "T7_409"  "CP1_409" "CP2_409"
## [3900] "P7_409"  "P8_409"  "P3_409"  "P4_409"  "PO7_409" "Fz_409"  "FCz_409"
## [3907] "Cz_409"  "CPz_409" "Pz_409"  "FC1_410" "T7_410"  "CP1_410" "CP2_410"
## [3914] "P7_410"  "P8_410"  "P3_410"  "P4_410"  "PO7_410" "Fz_410"  "FCz_410"
## [3921] "Cz_410"  "CPz_410" "Pz_410"  "FC1_411" "T7_411"  "CP1_411" "CP2_411"
## [3928] "P7_411"  "P8_411"  "P3_411"  "P4_411"  "PO7_411" "Fz_411"  "FCz_411"
## [3935] "Cz_411"  "CPz_411" "Pz_411"  "FC1_412" "T7_412"  "CP1_412" "CP2_412"
## [3942] "P7_412"  "P8_412"  "P3_412"  "PO7_412" "Fz_412"  "FCz_412" "Cz_412" 
## [3949] "CPz_412" "Pz_412"  "FC1_413" "T7_413"  "CP1_413" "CP2_413" "P7_413" 
## [3956] "P8_413"  "P3_413"  "PO7_413" "Fz_413"  "FCz_413" "Cz_413"  "CPz_413"
## [3963] "Pz_413"  "FC1_414" "T7_414"  "CP1_414" "CP2_414" "P7_414"  "P8_414" 
## [3970] "P3_414"  "PO7_414" "Fz_414"  "FCz_414" "Cz_414"  "CPz_414" "Pz_414" 
## [3977] "FC1_415" "T7_415"  "CP1_415" "CP2_415" "P7_415"  "P8_415"  "P3_415" 
## [3984] "PO7_415" "Fz_415"  "FCz_415" "Cz_415"  "CPz_415" "Pz_415"  "FC1_416"
## [3991] "T7_416"  "T8_416"  "CP1_416" "CP2_416" "P7_416"  "P8_416"  "P3_416" 
## [3998] "PO7_416" "Fz_416"  "FCz_416" "Cz_416"  "CPz_416" "Pz_416"  "FC1_417"
## [4005] "T7_417"  "T8_417"  "CP1_417" "CP2_417" "P7_417"  "P8_417"  "P3_417" 
## [4012] "PO7_417" "Fz_417"  "FCz_417" "Cz_417"  "CPz_417" "Pz_417"  "FC1_418"
## [4019] "T7_418"  "T8_418"  "CP1_418" "CP2_418" "P7_418"  "P8_418"  "P3_418" 
## [4026] "PO7_418" "Fz_418"  "FCz_418" "Cz_418"  "CPz_418" "Pz_418"  "FC1_419"
## [4033] "T7_419"  "T8_419"  "CP1_419" "CP2_419" "P7_419"  "P8_419"  "P3_419" 
## [4040] "PO7_419" "Fz_419"  "Cz_419"  "CPz_419" "Pz_419"  "FC1_420" "T8_420" 
## [4047] "CP1_420" "CP2_420" "P7_420"  "P8_420"  "P3_420"  "Cz_420"  "CPz_420"
## [4054] "Pz_420"  "T8_421"  "CP1_421" "CP2_421" "P7_421"  "P8_421"  "P3_421" 
## [4061] "Cz_421"  "CPz_421" "Pz_421"  "T8_422"  "CP1_422" "CP2_422" "P7_422" 
## [4068] "P8_422"  "P3_422"  "Cz_422"  "CPz_422" "Pz_422"  "T8_423"  "CP1_423"
## [4075] "CP2_423" "P7_423"  "P8_423"  "P3_423"  "Cz_423"  "CPz_423" "Pz_423" 
## [4082] "T8_424"  "CP1_424" "CP2_424" "P7_424"  "P8_424"  "P3_424"  "Cz_424" 
## [4089] "CPz_424" "Pz_424"  "T8_425"  "CP1_425" "CP2_425" "P7_425"  "P8_425" 
## [4096] "P3_425"  "Cz_425"  "CPz_425" "Pz_425"  "T8_426"  "CP1_426" "CP2_426"
## [4103] "P7_426"  "P8_426"  "P3_426"  "Cz_426"  "CPz_426" "Pz_426"  "T8_427" 
## [4110] "CP1_427" "CP2_427" "P7_427"  "P8_427"  "P3_427"  "Cz_427"  "CPz_427"
## [4117] "Pz_427"  "T8_428"  "CP1_428" "CP2_428" "P7_428"  "P8_428"  "P3_428" 
## [4124] "Cz_428"  "CPz_428" "Pz_428"  "T8_429"  "CP1_429" "CP2_429" "P7_429" 
## [4131] "P8_429"  "P3_429"  "Cz_429"  "CPz_429" "Pz_429"  "CP1_430" "CP2_430"
## [4138] "P7_430"  "P8_430"  "P3_430"  "Cz_430"  "CPz_430" "Pz_430"  "T7_431" 
## [4145] "CP1_431" "CP2_431" "P7_431"  "P8_431"  "P3_431"  "Cz_431"  "CPz_431"
## [4152] "Pz_431"  "T7_432"  "CP1_432" "CP2_432" "P7_432"  "P8_432"  "P3_432" 
## [4159] "Cz_432"  "CPz_432" "Pz_432"  "T7_433"  "CP1_433" "CP2_433" "P7_433" 
## [4166] "P8_433"  "P3_433"  "Cz_433"  "CPz_433" "Pz_433"  "CP1_434" "CP2_434"
## [4173] "P7_434"  "P8_434"  "P3_434"  "Cz_434"  "CPz_434" "Pz_434"  "CP1_435"
## [4180] "CP2_435" "P7_435"  "P8_435"  "P3_435"  "Cz_435"  "CPz_435" "Pz_435" 
## [4187] "CP1_436" "CP2_436" "P7_436"  "P8_436"  "P3_436"  "Cz_436"  "CPz_436"
## [4194] "Pz_436"  "CP1_437" "CP2_437" "P7_437"  "P8_437"  "P3_437"  "Cz_437" 
## [4201] "CPz_437" "Pz_437"  "CP1_438" "CP2_438" "P7_438"  "P8_438"  "P3_438" 
## [4208] "Cz_438"  "CPz_438" "Pz_438"  "CP1_439" "CP2_439" "P7_439"  "P8_439" 
## [4215] "P3_439"  "Cz_439"  "CPz_439" "Pz_439"  "CP1_440" "CP2_440" "P7_440" 
## [4222] "P8_440"  "P3_440"  "P4_440"  "Cz_440"  "CPz_440" "Pz_440"  "T7_441" 
## [4229] "CP1_441" "CP2_441" "P7_441"  "P8_441"  "P3_441"  "P4_441"  "Cz_441" 
## [4236] "CPz_441" "Pz_441"  "T7_442"  "CP1_442" "CP2_442" "P7_442"  "P8_442" 
## [4243] "P3_442"  "P4_442"  "Cz_442"  "CPz_442" "Pz_442"  "T7_443"  "CP1_443"
## [4250] "CP2_443" "P7_443"  "P8_443"  "P3_443"  "P4_443"  "Cz_443"  "CPz_443"
## [4257] "Pz_443"  "T7_444"  "CP1_444" "CP2_444" "P7_444"  "P8_444"  "P3_444" 
## [4264] "P4_444"  "Cz_444"  "CPz_444" "Pz_444"  "T7_445"  "CP1_445" "CP2_445"
## [4271] "P7_445"  "P8_445"  "P3_445"  "P4_445"  "Cz_445"  "CPz_445" "Pz_445" 
## [4278] "T7_446"  "CP1_446" "CP2_446" "P7_446"  "P8_446"  "P3_446"  "P4_446" 
## [4285] "Cz_446"  "CPz_446" "Pz_446"  "T7_447"  "CP1_447" "CP2_447" "P7_447" 
## [4292] "P8_447"  "P3_447"  "P4_447"  "Cz_447"  "CPz_447" "Pz_447"  "T7_448" 
## [4299] "CP1_448" "CP2_448" "P7_448"  "P8_448"  "P3_448"  "P4_448"  "Cz_448" 
## [4306] "CPz_448" "Pz_448"  "T7_449"  "CP1_449" "CP2_449" "P7_449"  "P8_449" 
## [4313] "P3_449"  "P4_449"  "Cz_449"  "CPz_449" "Pz_449"  "CP1_450" "CP2_450"
## [4320] "P7_450"  "P8_450"  "P3_450"  "P4_450"  "Cz_450"  "CPz_450" "Pz_450" 
## [4327] "CP1_451" "CP2_451" "P7_451"  "P8_451"  "P3_451"  "P4_451"  "Cz_451" 
## [4334] "CPz_451" "Pz_451"  "CP1_452" "CP2_452" "P7_452"  "P8_452"  "P3_452" 
## [4341] "P4_452"  "Cz_452"  "CPz_452" "Pz_452"  "CP1_453" "CP2_453" "P7_453" 
## [4348] "P8_453"  "P3_453"  "P4_453"  "Cz_453"  "CPz_453" "Pz_453"  "CP1_454"
## [4355] "CP2_454" "P7_454"  "P8_454"  "P3_454"  "P4_454"  "Cz_454"  "CPz_454"
## [4362] "Pz_454"  "CP1_455" "CP2_455" "P7_455"  "P8_455"  "P3_455"  "P4_455" 
## [4369] "Cz_455"  "CPz_455" "Pz_455"  "T8_456"  "CP1_456" "CP2_456" "P7_456" 
## [4376] "P8_456"  "P3_456"  "P4_456"  "Cz_456"  "CPz_456" "Pz_456"  "T8_457" 
## [4383] "CP1_457" "CP2_457" "P7_457"  "P8_457"  "P3_457"  "P4_457"  "CPz_457"
## [4390] "Pz_457"  "T8_458"  "CP1_458" "CP2_458" "P7_458"  "P8_458"  "P3_458" 
## [4397] "P4_458"  "CPz_458" "Pz_458"  "T8_459"  "CP1_459" "CP2_459" "P7_459" 
## [4404] "P8_459"  "P3_459"  "P4_459"  "CPz_459" "Pz_459"  "T8_460"  "CP1_460"
## [4411] "CP2_460" "P7_460"  "P8_460"  "P3_460"  "P4_460"  "CPz_460" "Pz_460" 
## [4418] "CP1_461" "CP2_461" "P7_461"  "P8_461"  "P3_461"  "P4_461"  "CPz_461"
## [4425] "Pz_461"  "CP1_462" "CP2_462" "P7_462"  "P8_462"  "P3_462"  "P4_462" 
## [4432] "CPz_462" "Pz_462"  "CP1_463" "CP2_463" "P7_463"  "P8_463"  "P3_463" 
## [4439] "P4_463"  "Cz_463"  "CPz_463" "Pz_463"  "T7_464"  "CP1_464" "CP2_464"
## [4446] "P7_464"  "P8_464"  "P3_464"  "P4_464"  "Cz_464"  "CPz_464" "Pz_464" 
## [4453] "T7_465"  "CP1_465" "CP2_465" "P7_465"  "P8_465"  "P3_465"  "P4_465" 
## [4460] "Cz_465"  "CPz_465" "Pz_465"  "T7_466"  "CP1_466" "CP2_466" "P7_466" 
## [4467] "P8_466"  "P3_466"  "P4_466"  "Cz_466"  "CPz_466" "Pz_466"  "T7_467" 
## [4474] "T8_467"  "CP1_467" "CP2_467" "P7_467"  "P8_467"  "P3_467"  "P4_467" 
## [4481] "Cz_467"  "CPz_467" "Pz_467"  "T7_468"  "T8_468"  "CP1_468" "CP2_468"
## [4488] "P7_468"  "P8_468"  "P3_468"  "P4_468"  "Cz_468"  "CPz_468" "Pz_468" 
## [4495] "T8_469"  "CP1_469" "CP2_469" "P7_469"  "P8_469"  "P3_469"  "P4_469" 
## [4502] "Cz_469"  "CPz_469" "Pz_469"  "T8_470"  "CP1_470" "CP2_470" "P7_470" 
## [4509] "P8_470"  "P3_470"  "P4_470"  "Cz_470"  "CPz_470" "Pz_470"  "CP1_471"
## [4516] "CP2_471" "P7_471"  "P8_471"  "P3_471"  "P4_471"  "Cz_471"  "CPz_471"
## [4523] "Pz_471"  "CP1_472" "CP2_472" "P7_472"  "P8_472"  "P3_472"  "P4_472" 
## [4530] "Cz_472"  "CPz_472" "Pz_472"  "CP1_473" "CP2_473" "P7_473"  "P8_473" 
## [4537] "P3_473"  "P4_473"  "Cz_473"  "CPz_473" "Pz_473"  "CP1_474" "CP2_474"
## [4544] "P7_474"  "P8_474"  "P3_474"  "P4_474"  "Cz_474"  "CPz_474" "Pz_474" 
## [4551] "CP1_475" "CP2_475" "P7_475"  "P8_475"  "P3_475"  "P4_475"  "Cz_475" 
## [4558] "CPz_475" "Pz_475"  "CP1_476" "CP2_476" "P7_476"  "P8_476"  "P3_476" 
## [4565] "P4_476"  "Cz_476"  "CPz_476" "Pz_476"  "T8_477"  "CP1_477" "CP2_477"
## [4572] "P7_477"  "P8_477"  "P3_477"  "P4_477"  "Cz_477"  "CPz_477" "Pz_477" 
## [4579] "T8_478"  "CP1_478" "CP2_478" "P7_478"  "P8_478"  "P3_478"  "P4_478" 
## [4586] "Cz_478"  "CPz_478" "Pz_478"  "T7_479"  "T8_479"  "CP1_479" "CP2_479"
## [4593] "P7_479"  "P8_479"  "P3_479"  "P4_479"  "Cz_479"  "CPz_479" "Pz_479" 
## [4600] "T7_480"  "T8_480"  "CP1_480" "CP2_480" "P7_480"  "P8_480"  "P3_480" 
## [4607] "P4_480"  "Cz_480"  "CPz_480" "Pz_480"  "T7_481"  "T8_481"  "CP1_481"
## [4614] "CP2_481" "P7_481"  "P8_481"  "P3_481"  "P4_481"  "Cz_481"  "CPz_481"
## [4621] "Pz_481"  "T7_482"  "T8_482"  "CP1_482" "CP2_482" "P7_482"  "P8_482" 
## [4628] "P3_482"  "P4_482"  "Cz_482"  "CPz_482" "Pz_482"  "T7_483"  "T8_483" 
## [4635] "CP1_483" "CP2_483" "P7_483"  "P8_483"  "P3_483"  "P4_483"  "CPz_483"
## [4642] "Pz_483"  "T7_484"  "T8_484"  "CP1_484" "CP2_484" "P7_484"  "P8_484" 
## [4649] "P3_484"  "P4_484"  "CPz_484" "Pz_484"  "T7_485"  "CP1_485" "CP2_485"
## [4656] "P7_485"  "P8_485"  "P3_485"  "P4_485"  "CPz_485" "Pz_485"  "T7_486" 
## [4663] "CP1_486" "CP2_486" "P7_486"  "P8_486"  "P3_486"  "P4_486"  "CPz_486"
## [4670] "Pz_486"  "T7_487"  "CP1_487" "CP2_487" "P7_487"  "P8_487"  "P3_487" 
## [4677] "P4_487"  "CPz_487" "Pz_487"  "T7_488"  "CP1_488" "CP2_488" "P7_488" 
## [4684] "P8_488"  "P3_488"  "P4_488"  "CPz_488" "Pz_488"  "T7_489"  "CP1_489"
## [4691] "CP2_489" "P7_489"  "P8_489"  "P3_489"  "P4_489"  "CPz_489" "Pz_489" 
## [4698] "T7_490"  "CP1_490" "CP2_490" "P7_490"  "P8_490"  "P3_490"  "P4_490" 
## [4705] "CPz_490" "Pz_490"  "T7_491"  "CP1_491" "CP2_491" "P7_491"  "P8_491" 
## [4712] "P3_491"  "P4_491"  "CPz_491" "Pz_491"  "CP1_492" "CP2_492" "P7_492" 
## [4719] "P8_492"  "P3_492"  "P4_492"  "CPz_492" "Pz_492"  "CP1_493" "CP2_493"
## [4726] "P7_493"  "P8_493"  "P3_493"  "P4_493"  "CPz_493" "Pz_493"  "CP1_494"
## [4733] "CP2_494" "P7_494"  "P8_494"  "P3_494"  "P4_494"  "CPz_494" "Pz_494" 
## [4740] "CP1_495" "CP2_495" "P7_495"  "P8_495"  "P3_495"  "P4_495"  "CPz_495"
## [4747] "Pz_495"  "CP1_496" "CP2_496" "P7_496"  "P8_496"  "P3_496"  "P4_496" 
## [4754] "CPz_496" "Pz_496"  "CP1_497" "CP2_497" "P7_497"  "P8_497"  "P3_497" 
## [4761] "P4_497"  "CPz_497" "Pz_497"  "CP1_498" "CP2_498" "P7_498"  "P8_498" 
## [4768] "P3_498"  "P4_498"  "CPz_498" "Pz_498"  "CP1_499" "CP2_499" "P7_499" 
## [4775] "P8_499"  "P3_499"  "P4_499"  "CPz_499" "Pz_499"  "T7_500"  "CP1_500"
## [4782] "CP2_500" "P7_500"  "P8_500"  "P3_500"  "P4_500"  "CPz_500" "Pz_500"

You can see the significant cluster (in red) at fixed time points (e.g. 160) using plot:

plot(model, samples = 160)

and the significant cluster over time and over channels using:

image(model)

where the significant clusters are represented in a colour-scale and the non-significant one in grey. The white pixels are tests which statistic are below the threshold.

ARI in EEG cluster mass

However, our significant cluster (11) says only that at least one combination channels/time-points is different from \(0\), we don’t know how many combinations are significant (spatial specificity paradox). So, we can apply ARI to understand the lower bound of the number of true discovery proportion:

ARIeeg(model = model)
##       ID Total  clustermass pvalue False Null True Null Active Proportion
##  [1,]  1     8 4.824842e+01 0.9956          0         8         0.0000000
##  [2,]  2     8 5.655352e+01 0.9930          0         8         0.0000000
##  [3,]  3     4 2.161425e+01 0.9998          0         4         0.0000000
##  [4,]  4     1 4.595571e+00 1.0000          0         1         0.0000000
##  [5,]  5     2 9.160799e+00 1.0000          0         2         0.0000000
##  [6,]  6     3 1.727826e+01 0.9998          0         3         0.0000000
##  [7,]  7     2 9.953708e+00 1.0000          0         2         0.0000000
##  [8,]  8     4 2.247954e+01 0.9996          0         4         0.0000000
##  [9,]  9     4 1.841798e+01 0.9998          0         4         0.0000000
## [10,] 10     1 5.834359e+00 1.0000          0         1         0.0000000
## [11,] 11     5 3.514078e+01 0.9982          0         5         0.0000000
## [12,] 12     5 3.062193e+01 0.9986          0         5         0.0000000
## [13,] 13     3 1.562175e+01 0.9998          0         3         0.0000000
## [14,] 14     3 1.855438e+01 0.9998          0         3         0.0000000
## [15,] 15     2 1.046127e+01 1.0000          0         2         0.0000000
## [16,] 16     2 1.091898e+01 1.0000          0         2         0.0000000
## [17,] 17    13 9.673299e+01 0.9784          0        13         0.0000000
## [18,] 18    16 9.924648e+01 0.9766          0        16         0.0000000
## [19,] 19     3 1.701493e+01 0.9998          0         3         0.0000000
## [20,] 20     4 2.614448e+01 0.9994          0         4         0.0000000
## [21,] 21    10 7.604927e+01 0.9864          0        10         0.0000000
## [22,] 22    26 1.750308e+02 0.9294          0        26         0.0000000
## [23,] 23    17 1.039216e+02 0.9742          0        17         0.0000000
## [24,] 24    35 2.762222e+02 0.8634          0        35         0.0000000
## [25,] 25     3 1.367199e+01 1.0000          0         3         0.0000000
## [26,] 26     2 9.355923e+00 1.0000          0         2         0.0000000
## [27,] 27    27 1.703500e+02 0.9326          0        27         0.0000000
## [28,] 28     5 2.598810e+01 0.9994          0         5         0.0000000
## [29,] 29     6 3.007729e+01 0.9988          0         6         0.0000000
## [30,] 30     4 1.807287e+01 0.9998          0         4         0.0000000
## [31,] 31     3 1.823876e+01 0.9998          0         3         0.0000000
## [32,] 32  4788 1.041780e+05 0.0002        749      4039         0.1564327
## [33,] 33    54 4.224551e+02 0.7706          0        54         0.0000000
## [34,] 34     5 3.646500e+01 0.9980          0         5         0.0000000
## [35,] 35     2 9.661613e+00 1.0000          0         2         0.0000000
## [36,] 36     7 5.632912e+01 0.9932          0         7         0.0000000
## [37,] 37     6 3.530033e+01 0.9982          0         6         0.0000000
## [38,] 38     2 9.153198e+00 1.0000          0         2         0.0000000
## [39,] 39     5 2.908355e+01 0.9992          0         5         0.0000000
## [40,] 40     8 6.388484e+01 0.9908          0         8         0.0000000
## [41,] 41    14 8.033085e+01 0.9854          0        14         0.0000000

So, we have at least \(15\%\) truly active component in the cluster \(32\).

References